US 2003/0192346 A1 · Gemstone cut

Abstract

A novel gemstone cut comprising a crown, a girdle, and a pavilion is described, wherein the gemstone includes precious gemstones (such as diamonds) and semi-precious gemstones. The crown includes an octagonal table, which is surrounded by eight triangular star facets. Eight table bezels are disposed in-between the star facets and eight mid-bezels are disposed in-between the table bezels. Furthermore, the gemstone's pavilion has eight concentrically arranged culet pavilion facets, a girdle pavilion facet and a bottom small break facet that are disposed in-between the culet pavilion facets. The gemstone's girdle has eight left top half facets and eight right top half facets (located in-between the girdle bezels of the crown), and eight left bottom half facets and eight right bottom half facets (disposed in-between the girdle pavilion facets and bottom small break facets).

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Drawings

Claims24

Dependent claims

A gemstone comprising:

a. a crown comprising an octagonal table disposed at the top of said crown, eight triangular star facets, eight quadrangular table bezels, eight quadrangular mid-bezels, and eight quadrangular girdle bezels,
said star facets disposed around said octagonal table, said table bezels disposed around and in-between said star facets, said mid-bezels disposed around and in-between said table bezels, and said girdle bezels disposed around and in-between said mid-bezels;
b. a pavilion comprising eight concentrically arranged culet pavilion facets, eight bottom small break facets, and eight girdle pavilion facets;
and
said small break facets and said girdle pavilion facet alternatively disposed around said culet pavilion facets, and
c. a girdle comprising a pair of top half facets and a pair of bottom half facets, and
said pair of top half facets disposed around and in-between said girdle bezels and said pair of bottom half facets disposed around and in-between said culet pavilion facet and girdle pavilion facet.

4 more elements

A gemstone cut with improved brilliance, said gemstone comprising:

a. a crown comprising:
i. an octagonal table forming a top surface of said crown,
ii. eight triangular star bezels disposed around said octagonal table at a first angle from said top surface,
iii. eight quadrangular table bezels disposed around said star bezels at a second angle from said top surface,
iv. eight quadrangular mid-bezels, each of said mid-bezels disposed between two of said table bezels at a third angle from said top surface, said second angle greater than said first angle, and
v. eight quadrangular girdle bezels, each of said girdle bezels disposed between two of said mid-bezels at a fourth angle from said top surface, said third angle greater than said second angle;
b. a pavilion, said pavilion further comprising:
i. eight pentagonal culet pavilion facets disposed concentrically at a fourth angle about a bottom,
ii. eight hexagonal bottom small break facets disposed at a fifth angle from said bottom, said fifth angle smaller than said fourth angle, and
iii. eight pentagonal girdle pavilion facets disposed at a sixth angle from said bottom, said sixth angle smaller than said fourth angle, and said bottom small facets and girdle pavilion facets arranged alternatively around said culet pavilion facets;
c. a girdle, said girdle further comprising:
i. eight triangular left top half facets and eight triangular right top half facets, said top half facets disposed at a seventh angle from said top surface and said top half facets disposed in-between said girdle bezels of said crown;
and
ii. eight four-sided left bottom half facets and eight four-sided right bottom half facets, said bottom facets disposed at a ninth angle from said bottom, and each of said bottom facets disposed in-between said girdle pavilion facet and said bottom small break facet.

11 more elements

Dependencies are inferred from the claim text.

Description3,323 words

Summary1,126 words

#1. Field of Invention

#The present invention relates generally to gemstones. More specifically, the present invention is related to a gemstone cut.

#2. Discussion of Prior Art

Brief description of the drawings18 figures

#FIG. 1 illustrates a general structure associated with a diamond.

#FIG. 2 illustrates a prior art diamond cut.

#FIGS. 3a and 3b collectively illustrate the top view of the present invention's gemstone crown, including a part of the girdle.

Detailed description1,891 words

#While this invention is illustrated and described in a preferred embodiment, the gemstone may be produced in many different configurations, forms and materials. There is depicted in the drawings, and will herein be described in detail, a preferred embodiment of the invention, with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and the associated functional specifications for its construction and is not intended to limit the invention to the embodiment illustrated. Those skilled in the art will envision many other possible variations within the scope of the present invention.

#It should be noted that the gemstone of the present invention can be a precious stone or a semi-precious stone, but in the preferred embodiment, the gemstone is a diamond. Thus, the type of gemstone should not be used to restrict the scope of the present invention. Furthermore, the specific parameters (e.g., depths, heights, ratios, and angles) are used for illustrative purposes only and should not be used to limit the scope of the present invention. Additionally, the shape of the gemstone in the figures corresponding to the specification and the preferred embodiment are for illustrative purposes only, and one skilled in the art can envision using other shapes (e.g., an oval shape, a marquis shape, etc.).

#FIGS. 3a and 3b, collectively, illustrate crown 300 of the gemstone of the preferred embodiment of the present invention. FIG. 3a illustrates a top view of crown 300 with its various facets. Crown 300 includes a flat table 302 shaped like an octagon and is disposed at the top of the crown 300. Also disposed on the diagonally extended side of crown 300 are facets, which include: star facets 304, table bezels 306, mid-bezels 308, girdle bezels 310, and top half facets 312, and 314.

Gemstone cut

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Gemstone cut

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Abstract

Drawings

Drawings

Claims24

Description3,323 words

Drawings

Classification2 codes

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Description3,323 words