EP3045069A1 - Cut stone and support comprising such a cut stone - Google Patents

Cut stone and support comprising such a cut stone Download PDF

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Publication number
EP3045069A1
EP3045069A1 EP15405003.3A EP15405003A EP3045069A1 EP 3045069 A1 EP3045069 A1 EP 3045069A1 EP 15405003 A EP15405003 A EP 15405003A EP 3045069 A1 EP3045069 A1 EP 3045069A1
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EP
European Patent Office
Prior art keywords
stone
upper face
facets
opposite
diamond
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EP15405003.3A
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German (de)
French (fr)
Inventor
Claude Sanz
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Cartier International AG
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Cartier International AG
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Priority to EP15405003.3A priority Critical patent/EP3045069A1/en
Publication of EP3045069A1 publication Critical patent/EP3045069A1/en
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C17/00—Gems or the like
    • A44C17/001—Faceting gems

Definitions

  • the present invention relates to a cut stone, in particular a diamond, for supporting a piece of jewelery, said stone comprising a front part called a crown and a dorsal part, called a flag, disposed at the rear of said crown and delimited from said crown by a intermediate party called a rondist.
  • the invention also relates to a jewelry piece holder.
  • the most famous oblong stone sizes are baguette, emerald, radiant or princess.
  • the stones carved according to these models have in common a quadrilateral rondist and a crown whose table is flat.
  • Such stones are often set in supports and, for example, in jewelery pieces or timepieces, such as watches. Indeed, to adorn a watch, it is known to crimp the case of the watch at a bezel receiving the watch glass.
  • the watch bezel is generally curved and can receive a plurality of oblong cut stones. However, once crimped into the watch bezel, the oblong cut stones do not protrude out of the watch bezel. They are, therefore, little visible which affects the aesthetics of the watch.
  • the present invention aims to overcome the above drawbacks by providing a cut stone whose shape allows a better visibility of the cut stone after crimping in a support.
  • the cut stone as defined in the preamble is characterized in that said ring is a polyhedron and comprises a polygonal base, at least two lateral faces and at least one upper face of generally curved shape, said upper face having a positive curvature and being delimited by two opposite curved lines, each consisting of a plurality of segments, said curved lines being interconnected by at least two opposite edges of said base, and in that said upper face and / or said lateral faces comprise a plurality of facets.
  • said upper face comprises diamond-shaped facets and opposite isosceles-shaped facets in pairs with a common vertex, in that two opposite isosceles-shaped facets of same vertex are arranged between two facets. adjacent diamond-shaped peaks, and in that said vertices are merged.
  • said upper face is inscribed in a curved surface.
  • said curved surface may be semi-cylindrical or substantially semi-cylindrical.
  • said upper face comprises a succession of said diamond-shaped facets whose longitudinal axes are parallel to each other and to said opposite edges, and two successive diamond-shaped facets are connected by two opposed isosceles triangle-shaped facets and of the same summit.
  • the base of said ring is quadrilateral and has said two opposite parallel edges and two opposite non-parallel edges.
  • the two lateral faces of said ring are opposite and formed of polygons respectively inscribed in a semicircle.
  • said lateral faces are each delimited by a plurality of edges inscribed in an arc of said semicircle and by an edge of the base.
  • said opposite curved lines of said upper face are formed edges of said side faces.
  • the jewelery piece support as defined in the preamble, is characterized in that it comprises at least one cut stone as described above, said stone being fixed to the support by its flag and by fixing means.
  • the support comprises a plurality of said stones crimped by said fixing means, and in that the crowns of said stones project at least partially out of the support.
  • the present invention relates to a stone 10, 11 cut comprising a front portion called crown 20 and a dorsal portion called flag 30, 30 '.
  • the ring 20 and the roof 30, 30 ' are separated from each other by an intermediate part called a rounder 40.
  • the stone 10 according to a first embodiment comprises a ring 20 formed by a polyhedron having a base 21, two side faces 22a, 22b and an upper face 23.
  • this example of polyhedron is not limiting and the crown 20 may comprise more than two lateral faces 22a, 22b and more than one upper face 23.
  • the base 21 is a convex quadrilateral formed of two opposite edges 21a, 21b parallel to each other and of different lengths, and two opposite edges 21c, 21d non-parallel to each other and of the same length. As a result, the base 21 forms an isosceles trapezoid, as illustrated by figure 2 .
  • this example is not limiting and the base 21 may be polygonal.
  • the two opposite edges 21a, 21b parallel to the base 21 are extended and interconnected by an upper face 23 of the ring 20.
  • the two opposite edges 21c, 21d nonparallel of the base 21 are each extended, in a vertical direction, by a lateral face 22a, 22b of the ring 20.
  • the lateral faces 22a, 22b are opposite and are polygons inscribed respectively substantially in a semicircle, whose diameter may correspond to the edges 21c, 21d.
  • the lateral faces 22a, 22b each comprise eight edges 221 inscribed in the arc of the semicircle and an edge 21c, 21d of the base 21.
  • the lateral faces 22a, 22b each comprise three facets 222 without this number being limiting.
  • the facets 222 are parallel to the edge 21c, 21d of the base 21.
  • the upper face 23 has a generally curved shape of positive curvature. More particularly, the upper face 23 is inscribed essentially in a half-cylinder, without this example being limiting.
  • the curved shape of the upper face 23 makes it possible to obtain a stone 10 whose crown 20 is projecting once the stone is set in a support.
  • the upper face 23 is delimited by the two opposite edges 21a, 21b parallel of the base 21.
  • it is delimited by two curved sections C1, C2 opposite formed each of the eight edges 221 of the faces 22a, 22b respectively.
  • the upper face 23 comprises nineteen facets 231, 232, 233 without this number being limiting.
  • the upper face 23 comprises a succession of diamond-shaped facets 231 whose longitudinal axes are parallel to each other, and to said two edges 21a, 21b of the base 21.
  • two diamond-shaped facets 231 successive are linked by two facets in the form of an isosceles triangle 232 of the same vertex S1.
  • the upper face 23 comprises five diamond-shaped facets 231, twelve facets in the form of an isosceles triangle 232, and two facets in the form of a pentagon 233. Consequently, the crown 20 has in total twenty-five facets 222, 231, 232, 233 in this example.
  • the pavilion 30 of the stone 10 is formed by a polyhedron having a base 31, and four side faces 32a, 32b, 32c, 32d.
  • the pavilion 30 has a general shape of a pyramid with S-summit degrees.
  • the base 31 is a convex quadrilateral formed of two opposite edges 31a, 31b parallel to each other and two opposite edges 31c, 31d not parallel to each other and of the same length. As a result, the base 31 forms an isosceles trapezoid, as illustrated by figure 4 .
  • the opposite edges 31a, 31b, 31c, 31d of the base 31 are each extended by a lateral face 32a, 32b, 32c, 32d and are all interconnected at a common point corresponding to the apex S.
  • the lateral faces 32a, 32b, 32c, 32d each comprise three degree facets 321 without this number being limiting.
  • the facets 321 are parallel to the edge 31a, 31b, 31c, 31d of the base 31.
  • the stone 11 cut, according to a second embodiment has a flag 30 'different from that of the first embodiment. Indeed, the flag 30 'is cut according to the well-known princess size of the prior art.
  • the stone 10, 11 cut according to the invention is particularly suitable for crimping in a support (not shown).
  • a support may consist of a timepiece, such as a bezel of a watch case, by example.
  • the stone 10, 11 is preferably fixed to the support by the horn 30, 30 'and by fastening means (not shown).
  • the support may comprise a plurality of stones 10, 11 in which they are crimped.
  • the respective crowns 20 of said stones 10, 11 front protruding out of the support. As a result, the stones 10, 11 are more visible.

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  • Adornments (AREA)

Abstract

La présente invention concerne une pierre (10) taillée notamment un diamant pour support de pièce de bijouterie, ladite pierre comportant une partie frontale appelée couronne (20) et une partie dorsale, appelée pavillon (30), disposée à l'arrière de ladite couronne (20) et délimitée de ladite couronne (20) par une partie intermédiaire appelée rondiste (40). Ladite couronne (20) est un polyèdre et comporte une base (21) polygonale, au moins deux faces latérales (22a, 22b) et au moins une face supérieure (23) de forme générale incurvée. Ladite face supérieure (23) présente une courbure positive et est délimitée par deux lignes incurvées (C1, C2) opposées, constituées chacune d'une pluralité de segments (221). Lesdites lignes incurvées (C1, C2) sont reliées entre elles par au moins deux arêtes opposées (21 a, 21 b) de ladite base (21), et ladite face supérieure (23) et/ou lesdites faces latérales (22a, 22b) comportent une pluralité de facettes (222, 231, 232, 233).The present invention relates to a stone (10) cut in particular a diamond for supporting a piece of jewelery, said stone having a front portion called a crown (20) and a dorsal portion, called flag (30), disposed at the rear of said crown (20) and delimited from said ring (20) by an intermediate portion called a rondist (40). Said ring (20) is a polyhedron and comprises a polygonal base (21), at least two lateral faces (22a, 22b) and at least one upper face (23) of generally curved shape. Said upper face (23) has a positive curvature and is delimited by two opposite curved lines (C1, C2), each consisting of a plurality of segments (221). Said curved lines (C1, C2) are interconnected by at least two opposite edges (21a, 21b) of said base (21), and said upper face (23) and / or said lateral faces (22a, 22b) have a plurality of facets (222, 231, 232, 233).

Description

Domaine techniqueTechnical area

La présente invention concerne une pierre taillée, notamment un diamant, pour support de pièce de bijouterie, ladite pierre comportant une partie frontale appelée couronne et une partie dorsale, appelée pavillon, disposée à l'arrière de ladite couronne et délimitée de ladite couronne par une partie intermédiaire appelée rondiste.The present invention relates to a cut stone, in particular a diamond, for supporting a piece of jewelery, said stone comprising a front part called a crown and a dorsal part, called a flag, disposed at the rear of said crown and delimited from said crown by a intermediate party called a rondist.

L'invention concerne également un support de pièce de bijouterie.The invention also relates to a jewelry piece holder.

Technique antérieurePrior art

Les tailles de pierre oblongues les plus connues sont les tailles baguette, émeraude, radiante ou princesse. Les pierres taillées selon ces modèles ont en commun un rondiste quadrilatéral et une couronne dont la table est plane.The most famous oblong stone sizes are baguette, emerald, radiant or princess. The stones carved according to these models have in common a quadrilateral rondist and a crown whose table is flat.

De telles pierres sont souvent serties dans des supports et, par exemple, dans des pièces de bijouterie ou des pièces d'horlogerie, telles que des montres. En effet, pour orner une montre, il est connu de sertir le boitier de la montre au niveau d'une lunette recevant le verre de montre. La lunette de montre est en général bombée et permet de recevoir une pluralité de pierres taillées oblongues. Toutefois, une fois serties dans la lunette de montre, les pierres taillées oblongues ne font pas saillies hors de la lunette de montre. Elles sont, de ce fait, peu visibles ce qui nuit à l'esthétique de la montre.Such stones are often set in supports and, for example, in jewelery pieces or timepieces, such as watches. Indeed, to adorn a watch, it is known to crimp the case of the watch at a bezel receiving the watch glass. The watch bezel is generally curved and can receive a plurality of oblong cut stones. However, once crimped into the watch bezel, the oblong cut stones do not protrude out of the watch bezel. They are, therefore, little visible which affects the aesthetics of the watch.

Exposé de l'inventionPresentation of the invention

La présente invention vise à pallier les inconvénients ci-dessus en proposant une pierre taillée dont la forme permet une meilleure visibilité de la pierre taillée après sertissage dans un support.The present invention aims to overcome the above drawbacks by providing a cut stone whose shape allows a better visibility of the cut stone after crimping in a support.

Dans ce but, la pierre taillée telle que définie en préambule, est caractérisée en ce que ladite couronne est un polyèdre et comporte une base polygonale, au moins deux faces latérales et au moins une face supérieure de forme générale incurvée, ladite face supérieure présentant une courbure positive et étant délimitée par deux lignes incurvées opposées, constituées chacune d'une pluralité de segments, lesdites lignes incurvées étant reliées entre elles par au moins deux arêtes opposées de ladite base, et en ce que ladite face supérieure et/ou lesdites faces latérales comportent une pluralité de facettes.For this purpose, the cut stone as defined in the preamble, is characterized in that said ring is a polyhedron and comprises a polygonal base, at least two lateral faces and at least one upper face of generally curved shape, said upper face having a positive curvature and being delimited by two opposite curved lines, each consisting of a plurality of segments, said curved lines being interconnected by at least two opposite edges of said base, and in that said upper face and / or said lateral faces comprise a plurality of facets.

De manière avantageuse, ladite face supérieure comporte des facettes en forme de losange et des facettes en forme de triangle isocèle opposées deux à deux avec un sommet commun, en ce que deux facettes en forme de triangle isocèle opposées de même sommet sont disposées entre deux facettes adjacentes en forme de losange de sommets, et en ce que lesdits sommets sont confondus.Advantageously, said upper face comprises diamond-shaped facets and opposite isosceles-shaped facets in pairs with a common vertex, in that two opposite isosceles-shaped facets of same vertex are arranged between two facets. adjacent diamond-shaped peaks, and in that said vertices are merged.

De préférence, ladite face supérieure est inscrite dans une surface courbe.Preferably, said upper face is inscribed in a curved surface.

Dans ce cas, ladite surface courbe peut être semi-cylindrique ou essentiellement semi-cylindrique.In this case, said curved surface may be semi-cylindrical or substantially semi-cylindrical.

De préférence, ladite face supérieure comporte une succession desdites facettes en forme de losange dont les axes longitudinaux sont parallèles entre eux ainsi qu'auxdites arêtes opposées, et deux facettes en forme de losange successives sont liées par deux facettes en forme de triangle isocèle opposées et de même sommet.Preferably, said upper face comprises a succession of said diamond-shaped facets whose longitudinal axes are parallel to each other and to said opposite edges, and two successive diamond-shaped facets are connected by two opposed isosceles triangle-shaped facets and of the same summit.

De manière avantageuse, la base de ladite couronne est quadrilatérale et comporte lesdites deux arêtes opposées parallèles et deux arêtes opposées non parallèles.Advantageously, the base of said ring is quadrilateral and has said two opposite parallel edges and two opposite non-parallel edges.

De préférence, les deux faces latérales de ladite couronne sont opposées et formées de polygones inscrits respectivement dans un demi-cercle.Preferably, the two lateral faces of said ring are opposite and formed of polygons respectively inscribed in a semicircle.

Dans ce cas, lesdites faces latérales sont délimitées chacune par une pluralité d'arêtes inscrites dans un arc dudit demi-cercle et par une arête de la base. En outre, lesdites lignes incurvées opposées de ladite face supérieure sont formées des arêtes desdites faces latérales.In this case, said lateral faces are each delimited by a plurality of edges inscribed in an arc of said semicircle and by an edge of the base. In addition, said opposite curved lines of said upper face are formed edges of said side faces.

Le support de pièce de bijouterie, tel que définie en préambule, est caractérisé en ce qu'il comporte au moins une pierre taillée telle que décrite précédemment, ladite pierre étant fixée au support par son pavillon et par des moyens de fixation.The jewelery piece support, as defined in the preamble, is characterized in that it comprises at least one cut stone as described above, said stone being fixed to the support by its flag and by fixing means.

De préférence, le support comporte une pluralité desdites pierres serties par lesdits moyens de fixation, et en ce que les couronnes desdites pierres sont saillantes au moins partiellement hors du support.Preferably, the support comprises a plurality of said stones crimped by said fixing means, and in that the crowns of said stones project at least partially out of the support.

Description sommaire des dessinsBrief description of the drawings

La présente invention et ses avantages apparaîtront mieux dans la description suivante de plusieurs modes de réalisation donnés à titre d'exemples non limitatifs, en référence aux dessins annexés, dans lesquels:

  • la figure 1 représente une vue en perspective d'une pierre taillée selon une première variante de l'invention,
  • les figures 2, 3 et 4 sont respectivement des vues de côté, de dessus, et de dessous de la pierre taillée de la figure 1,
  • la figure 5 représente une vue en perspective d'une pierre taillée selon une seconde variante de l'invention, et
  • les figures 6, 7 et 8 sont respectivement des vues de côté, de dessus, et de dessous de la pierre taillée de la figure 5.
The present invention and its advantages will appear better in the following description of several embodiments given as non-limiting examples, with reference to the appended drawings, in which:
  • the figure 1 represents a perspective view of a cut stone according to a first variant of the invention,
  • the Figures 2, 3 and 4 are respectively side, top, and bottom views of the cut stone of the figure 1 ,
  • the figure 5 represents a perspective view of a cut stone according to a second variant of the invention, and
  • the Figures 6, 7 and 8 are respectively side, top, and bottom views of the cut stone of the figure 5 .

Illustrations de l'invention et meilleures manières de la réaliserIllustrations of the invention and better ways to achieve it

En référence aux figures, la présente invention concerne une pierre 10, 11 taillée comportant une partie frontale appelée couronne 20 et une partie dorsale appelée pavillon 30, 30'. La couronne 20 et le pavillon 30, 30' sont séparés l'un de l'autre par une partie intermédiaire nommée rondiste 40.With reference to the figures, the present invention relates to a stone 10, 11 cut comprising a front portion called crown 20 and a dorsal portion called flag 30, 30 '. The ring 20 and the roof 30, 30 'are separated from each other by an intermediate part called a rounder 40.

Comme l'illustrent les figures 1 à 3, la pierre 10 selon une première variante de réalisation comporte une couronne 20 formée par un polyèdre comportant une base 21, deux faces latérales 22a, 22b et une face supérieure 23. Bien entendu, cet exemple de polyèdre n'est pas limitatif et la couronne 20 peut comporter plus de deux faces latérales 22a, 22b et plus d'une face supérieure 23.As illustrated by Figures 1 to 3 , the stone 10 according to a first embodiment comprises a ring 20 formed by a polyhedron having a base 21, two side faces 22a, 22b and an upper face 23. Of course, this example of polyhedron is not limiting and the crown 20 may comprise more than two lateral faces 22a, 22b and more than one upper face 23.

La base 21 est un quadrilatère convexe formé de deux arêtes opposées 21 a, 21b parallèles entre elles et de longueurs différentes, et deux arêtes opposées 21c, 21d non parallèles entre elles et de même longueur. Il en résulte que la base 21 forme un trapèze isocèle, comme l'illustre la figure 2. Bien entendu, cet exemple n'est pas limitatif et la base 21 peut être polygonale. D'une part, les deux arêtes opposées 21a, 21b parallèles de la base 21 sont prolongées et reliées entre elles par une face supérieure 23 de la couronne 20. D'autre part, les deux arêtes opposées 21c, 21d non parallèles de la base 21 sont chacune prolongées, dans une direction verticale, par une face latérale 22a, 22b de la couronne 20.The base 21 is a convex quadrilateral formed of two opposite edges 21a, 21b parallel to each other and of different lengths, and two opposite edges 21c, 21d non-parallel to each other and of the same length. As a result, the base 21 forms an isosceles trapezoid, as illustrated by figure 2 . Of course, this example is not limiting and the base 21 may be polygonal. On the one hand, the two opposite edges 21a, 21b parallel to the base 21 are extended and interconnected by an upper face 23 of the ring 20. On the other hand, the two opposite edges 21c, 21d nonparallel of the base 21 are each extended, in a vertical direction, by a lateral face 22a, 22b of the ring 20.

Les faces latérales 22a, 22b sont opposées et sont des polygones inscrits respectivement essentiellement dans un demi-cercle, dont le diamètre peut correspondre aux arêtes 21c, 21 d. Les faces latérales 22a, 22b comportent chacune huit arêtes 221 inscrites dans l'arc du demi-cercle et une arête 21c, 21d de la base 21. En outre, les faces latérales 22a, 22b comportent chacune trois facettes 222 sans que ce nombre soit limitatif. Pour une même face latérale 22a, 22b, les facettes 222 sont parallèles à l'arête 21c, 21d de la base 21.The lateral faces 22a, 22b are opposite and are polygons inscribed respectively substantially in a semicircle, whose diameter may correspond to the edges 21c, 21d. The lateral faces 22a, 22b each comprise eight edges 221 inscribed in the arc of the semicircle and an edge 21c, 21d of the base 21. In addition, the lateral faces 22a, 22b each comprise three facets 222 without this number being limiting. For the same side face 22a, 22b, the facets 222 are parallel to the edge 21c, 21d of the base 21.

La face supérieure 23 présente une forme générale incurvée de courbure positive. Plus particulièrement, la face supérieure 23 est inscrite essentiellement dans un demi-cylindre, sans que cet exemple ne soit limitatif. Avantageusement, la forme incurvée de la face supérieure 23 permet d'obtenir une pierre 10 dont la couronne 20 est saillante une fois la pierre sertie dans un support. D'une part, la face supérieure 23 est délimitée, par les deux arêtes opposées 21a, 21b parallèles de la base 21. D'autre part, elle est délimitée par deux sections courbes C1, C2 opposées formées chacune des huit arêtes 221 des faces latérales 22a, 22b respectives. En outre, dans l'exemple illustré la face supérieure 23 comporte dix-neuf facettes 231, 232, 233 sans que ce nombre soit limitatif. En particulier, la face supérieure 23 comporte une succession de facettes en forme de losange 231 dont les axes longitudinaux sont parallèles entre eux, ainsi qu'auxdites deux arêtes 21a, 21b de la base 21. De plus, deux facettes en forme de losange 231 successives sont liées par deux facettes en forme de triangle isocèle 232 de même sommet S1. La face supérieure 23 comporte cinq facettes en forme de losange 231, douze facettes en forme de triangle isocèle 232 et deux facettes en forme de pentagone 233. Par conséquent, la couronne 20 comporte au total vingt-cinq facettes 222, 231, 232, 233 dans cet exemple.The upper face 23 has a generally curved shape of positive curvature. More particularly, the upper face 23 is inscribed essentially in a half-cylinder, without this example being limiting. Advantageously, the curved shape of the upper face 23 makes it possible to obtain a stone 10 whose crown 20 is projecting once the stone is set in a support. On the one hand, the upper face 23 is delimited by the two opposite edges 21a, 21b parallel of the base 21. On the other hand, it is delimited by two curved sections C1, C2 opposite formed each of the eight edges 221 of the faces 22a, 22b respectively. In addition, in the example shown, the upper face 23 comprises nineteen facets 231, 232, 233 without this number being limiting. In particular, the upper face 23 comprises a succession of diamond-shaped facets 231 whose longitudinal axes are parallel to each other, and to said two edges 21a, 21b of the base 21. In addition, two diamond-shaped facets 231 successive are linked by two facets in the form of an isosceles triangle 232 of the same vertex S1. The upper face 23 comprises five diamond-shaped facets 231, twelve facets in the form of an isosceles triangle 232, and two facets in the form of a pentagon 233. Consequently, the crown 20 has in total twenty-five facets 222, 231, 232, 233 in this example.

Tel qu'illustré à la figure 4, le pavillon 30 de la pierre 10 est formé par un polyèdre comportant une base 31, et quatre faces latérales 32a, 32b, 32c, 32d. Le pavillon 30 présente une forme générale de pyramide à degrés de sommet S.As illustrated in figure 4 , the pavilion 30 of the stone 10 is formed by a polyhedron having a base 31, and four side faces 32a, 32b, 32c, 32d. The pavilion 30 has a general shape of a pyramid with S-summit degrees.

La base 31 est un quadrilatère convexe formé de deux arêtes opposées 31 a, 31 b parallèles entre elles et de deux arêtes opposées 31 c, 31 d non parallèles entre elles et de même longueur. Il en résulte que la base 31 forme un trapèze isocèle, comme l'illustre la figure 4. D'une part, les arêtes opposées 31a, 31b, 31c, 31d de la base 31 sont chacune prolongées par une face latérale 32a, 32b, 32c, 32d et sont toutes reliées entre elles en un point commun correspondant au sommet S.The base 31 is a convex quadrilateral formed of two opposite edges 31a, 31b parallel to each other and two opposite edges 31c, 31d not parallel to each other and of the same length. As a result, the base 31 forms an isosceles trapezoid, as illustrated by figure 4 . On the one hand, the opposite edges 31a, 31b, 31c, 31d of the base 31 are each extended by a lateral face 32a, 32b, 32c, 32d and are all interconnected at a common point corresponding to the apex S.

Les faces latérales 32a, 32b, 32c, 32d comportent chacune trois facettes à degrés 321 sans que ce nombre soit limitatif. Pour une même face latérale 32a, 32b, 32c, 32d, les facettes 321 sont parallèles à l'arête 31a, 31b, 31c, 31 d de la base 31.The lateral faces 32a, 32b, 32c, 32d each comprise three degree facets 321 without this number being limiting. For the same side face 32a, 32b, 32c, 32d, the facets 321 are parallel to the edge 31a, 31b, 31c, 31d of the base 31.

En référence aux figures 5 à 8, la pierre 11 taillée, selon un second mode de réalisation présente un pavillon 30' différent de celui du premier mode de réalisation. En effet, le pavillon 30' est taillé selon la taille princesse bien connue de l'art antérieur.With reference to Figures 5 to 8 , the stone 11 cut, according to a second embodiment has a flag 30 'different from that of the first embodiment. Indeed, the flag 30 'is cut according to the well-known princess size of the prior art.

Possibilités d'application industriellePossibilities of industrial application

Il ressort clairement de cette description que l'invention permet d'atteindre les buts fixés, à savoir une pierre taillée dont la forme permet une meilleure visibilité de la pierre taillée après sertissage dans un support.
La pierre 10, 11 taillée selon l'invention est particulièrement adaptée pour être sertie dans un support (non représenté). Un tel support peut consister en une pièce d'horlogerie, comme une lunette d'un boîtier de montre, par exemple. La pierre 10, 11 est de préférence fixée au support par le pavillon 30, 30' et par des moyens de fixation (non représentés). Le support peut comporter une pluralité de pierres 10, 11 dans lequel elles sont serties. Avantageusement, les couronnes 20 respectives desdites pierres 10, 11 front saillies hors du support. Il en résulte que les pierres 10, 11 sont plus visibles.It is clear from this description that the invention achieves the goals, namely a cut stone whose shape allows a better visibility of the cut stone after crimping in a support.
The stone 10, 11 cut according to the invention is particularly suitable for crimping in a support (not shown). Such a support may consist of a timepiece, such as a bezel of a watch case, by example. The stone 10, 11 is preferably fixed to the support by the horn 30, 30 'and by fastening means (not shown). The support may comprise a plurality of stones 10, 11 in which they are crimped. Advantageously, the respective crowns 20 of said stones 10, 11 front protruding out of the support. As a result, the stones 10, 11 are more visible.

La présente invention n'est pas limitée aux exemples de réalisation décrits mais s'étend à toute modification et variante évidentes pour un homme du métier.The present invention is not limited to the embodiments described but extends to any modification and variation obvious to a person skilled in the art.

Claims (11)

Pierre (10, 11) taillée notamment un diamant pour support de pièce de bijouterie, ladite pierre comportant une partie frontale appelée couronne (20) et une partie dorsale, appelée pavillon (30, 30'), disposée à l'arrière de ladite couronne (20) et délimitée de ladite couronne (20) par une partie intermédiaire appelée rondiste (40), caractérisée en ce que ladite couronne (20) est un polyèdre et comporte une base (21) polygonale, au moins deux faces latérales (22a, 22b) et au moins une face supérieure (23) de forme générale incurvée, ladite face supérieure (23) présentant une courbure positive et étant délimitée par deux lignes incurvées (C1, C2) opposées, constituées chacune d'une pluralité de segments (221), lesdites lignes incurvées (C1, C2) étant reliées entre elles par au moins deux arêtes opposées (21 a, 21b) de ladite base (21), et en ce que ladite face supérieure (23) et/ou lesdites faces latérales (22a, 22b) comportent une pluralité de facettes (222, 231, 232, 233).Stone (10, 11) cut in particular a diamond for supporting a piece of jewelery, said stone having a front portion called a crown (20) and a dorsal portion, called flag (30, 30 '), arranged at the rear of said crown (20) and delimited from said ring (20) by an intermediate portion called a rondist (40), characterized in that said ring (20) is a polyhedron and comprises a polygonal base (21), at least two lateral faces (22a, 22b) and at least one upper face (23) of generally curved shape, said upper face (23) having a positive curvature and being delimited by two opposite curved lines (C1, C2), each consisting of a plurality of segments (221). ), said curved lines (C1, C2) being interconnected by at least two opposite edges (21a, 21b) of said base (21), and in that said upper face (23) and / or said lateral faces ( 22a, 22b) comprise a plurality of facets s (222, 231, 232, 233). Pierre selon la revendication 1, caractérisée en ce que ladite face supérieure (23) comporte des facettes en forme de losange (231) et des facettes en forme de triangle isocèle (232) opposées deux à deux avec un sommet (S1) commun, en ce que deux facettes en forme de triangle isocèle (232) opposées de même sommet (S1) sont disposées entre deux facettes adjacentes en forme de losange (231) de sommets (S1), et en ce que lesdits sommets (S1) sont confondus.Stone according to claim 1, characterized in that said upper face (23) comprises diamond-shaped facets (231) and isosceles triangle-shaped facets (232) opposite in pairs with a common vertex (S1), in that two opposite isosceles triangle-like facets (232) of same vertex (S1) are disposed between two adjacent diamond-shaped facets (231) of vertices (S1), and that said vertices (S1) are merged. Pierre selon la revendication 1, caractérisée en ce que ladite face supérieure (23) est inscrite dans une surface courbe.Stone according to claim 1, characterized in that said upper face (23) is inscribed in a curved surface. Pierre selon la revendication 3, caractérisée en ce que ladite surface courbe est semi-cylindrique ou essentiellement semi-cylindrique.Stone according to claim 3, characterized in that said curved surface is semi-cylindrical or substantially semi-cylindrical. Pierre selon la revendication 2, caractérisée en ce que ladite face supérieure (23) comporte une succession desdites facettes en forme de losange (231) dont les axes longitudinaux sont parallèles entre eux ainsi qu'auxdites arêtes opposées (21 a, 21 b), et en ce que deux facettes en forme de losange (231) successives sont liées par deux facettes en forme de triangle isocèle (232) opposées et de même sommet (S1).Stone according to claim 2, characterized in that said upper face (23) comprises a succession of said diamond-shaped facets (231) whose longitudinal axes are parallel to each other and to said opposite edges (21 a, 21 b), and in that two successive diamond-shaped facets (231) are linked by two opposing isosceles triangle-shaped facets (232) of the same vertex (S1). Pierre selon la revendication 1, caractérisée en ce que la base (21) de ladite couronne (20) est quadrilatérale et comporte lesdites deux arêtes opposées (21 a, 21b) parallèles et deux arêtes opposées (21c, 21 d) non parallèles.Stone according to claim 1, characterized in that the base (21) of said ring (20) is quadrilateral and comprises said two opposite edges (21a, 21b) parallel and two opposite edges (21c, 21d) nonparallel. Pierre selon la revendication 1, caractérisée en ce que les deux faces latérales (22a, 22b) de ladite couronne (20) sont opposées et formées de polygones inscrits respectivement essentiellement dans un demi-cercle.Stone according to claim 1, characterized in that the two lateral faces (22a, 22b) of said ring (20) are opposed and formed of polygons inscribed respectively substantially in a semicircle. Pierre selon la revendication 7, caractérisée en ce que lesdites faces latérales (22a, 22b) sont délimitées chacune par une pluralité d'arêtes (221) inscrites dans un arc dudit demi-cercle et par une arête (21c, 21d) de la base (21).Stone according to claim 7, characterized in that said lateral faces (22a, 22b) are each delimited by a plurality of ridges (221) inscribed in an arc of said semicircle and by an edge (21c, 21d) of the base (21). Pierre selon la revendication 8, caractérisée en ce que lesdites lignes incurvées (C1, C2) opposées de ladite face supérieure (23) sont formées des arêtes (221) desdites faces latérales (22a, 22b).Stone according to claim 8, characterized in that said curved lines (C1, C2) opposite said upper face (23) are formed edges (221) of said side faces (22a, 22b). Support de pièce de bijouterie, caractérisé en ce qu'il comporte au moins une pierre (10, 11) taillée selon l'une quelconque des revendications 1 à 9, ladite pierre étant fixée (10, 11) au support par son pavillon (30, 30') et par des moyens de fixation.Jewelery piece holder, characterized in that it comprises at least one cut stone (10, 11) according to any one of claims 1 to 9, said stone being fixed (10, 11) to the support by its flag (30). , 30 ') and by fixing means. Support selon la revendication 10, caractérisé en ce qu'il comporte une pluralité desdites pierres (10, 11) serties par lesdits moyens de fixation, et en ce que les couronnes (20) desdites pierres (10, 11) sont saillantes au moins partiellement hors du support.Support according to claim 10, characterized in that it comprises a plurality of said stones (10, 11) crimped by said fixing means, and in that the crowns (20) of said stones (10, 11) project at least partially out of support.
EP15405003.3A 2015-01-16 2015-01-16 Cut stone and support comprising such a cut stone Withdrawn EP3045069A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009390A (en) * 1934-03-06 1935-07-30 Bayardi Brothers Inc Cut diamond
US6006548A (en) * 1996-09-12 1999-12-28 M. Fabrikant & Sons, Ltd. Facet cut structure for gemstones to enhance brilliance
EP2412266A2 (en) * 2010-07-29 2012-02-01 Firestone Inc. Multi-faceted gemstone for multi-stone jewelry item

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009390A (en) * 1934-03-06 1935-07-30 Bayardi Brothers Inc Cut diamond
US6006548A (en) * 1996-09-12 1999-12-28 M. Fabrikant & Sons, Ltd. Facet cut structure for gemstones to enhance brilliance
EP2412266A2 (en) * 2010-07-29 2012-02-01 Firestone Inc. Multi-faceted gemstone for multi-stone jewelry item

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