Matches 1 - 50 out of 92 1 2 >


Match Document Document Title
US20120266631 SETTING FOR GEMSTONES, PARTICULARLY DIAMONDS  
A setting for a gemstone including a girdle, a crown on one side of the girdle, and a pavilion on the opposite side of the girdle, characterized in that the setting mounts the gemstone in an...
US20130239615 METHOD FOR GROWING WHITE COLOR DIAMONDS BY USING DIBORANE AND NITROGEN IN COMBINATION IN A MICROWAVE PLASMA CHEMICAL VAPOR DEPOSITION SYSTEM  
The present application discloses the details of a microwave plasma chemical vapor deposition process that uses Nitrogen and Diborane simultaneously in combination along with the Methane and...
US20150121960 METHOD AND APPARATUS FOR MACHINING DIAMONDS AND GEMSTONES USING FILAMENTATION BY BURST ULTRAFAST LASER PULSES  
A non-ablative laser machining method and apparatus for cutting facets of a diamond, using a material machining technique involving filamentation by burst ultrafast laser pulses well suited to...
US20060037360 Stone cut and method of making  
A stone cut and method for cutting a stone that increases the number of facets on the stone as well as the scintillation, brilliance, and light reflectivity of the stone. The stone cut and method...
US20050011226 Precious stone cut and method of making  
A stone cut and method for cutting a stone that increase the number of facets on the stone as well as the scintillation, brilliance, and light reflectivity of the stone. The cut and method...
US20070157666 COATINGS FOR GEMSTONES  
The invention provides a decorative object comprising a transparent or translucent substrate having a body and at least one surface bearing a thin film coating. The coating imparts in the...
US20090260396 METHODS FOR PROCESSING ORNAMENTAL DIAMONDS AND CORRESPONDING ORNAMENTAL DIAMONDS  
A method for processing diamonds and corresponding ornamental diamond structures employ diamonds having visible cloud inclusions. The diamond is cut and polished to form crown and pavilion facets...
US20100154103 GEMMED SEQUIN  
A sequin (4), comprising a carrier layer (1), a gemstone (2, 3) or a plurality of gemstones (2, 3) being arranged on one side of the carrier layer (1).
US20090178438 DECAGONAL SHAPED DIAMOND WHICH DISPLAYS HEARTS AND ARROWS PATTERN  
A decagonal shaped diamond, adapted to display a hearts and arrows pattern when exposed to light comparable to the hearts and arrows pattern in a round diamond. The decagonal shaped diamond should...
US20090056374 Gemstone Facet Configuration  
A gemstone can include a crown portion having a table facet, a plurality of trapezoidal facets, a plurality of irregular-hexagonal facets, a plurality of irregular-pentagonal facets, and a...
US20110265514 METHOD OF CUTTING DIAMONDS  
In a method of taking a star facet of a diamond and extending its length to the girdle (the outside perimeter) of the diamond, a shield style (obelisk-shaped) facet is produced in rounds and fancy...
US20150296934 A DIAMOND WITH EIGHTY-ONE FACETS HAVING A TEN HEARTS AND TEN ARROWS INNER STRUCTURE  
The present invention relates to a diamond with eighty-one facets having a ten hearts and ten arrows inner structure, it includes ten main crown facets and ten main pavilion facets; said diamond...
US20120079853 GEM WITH BRILLIANT CUT  
Brilliant-cut gemstone, wherein the crown angle (α) is between 32.8° and 33.0°.
US20100020649 DEVICE FOR DISPLAYING TIME  
A device for displaying time, in particular a wrist watch, comprising a plurality of gemstones and a plurality of illumination elements which are arranged on or at a carrier and via which the...
US20070209390 Multiplet gemstones with directly printed embedded translucent images  
A multiplet gemstone is described having a first and a second layer of gemstone material, the first and second layers each having an interfacial surface; and wherein one of the interfacial...
US20070186586 Oval-cut diamond  
An oval-cut diamond comprises a girdle having a contour line in an oval or oval-like shape, a crown above the girdle having an octagonal table facet on a top of it and a pavilion below the girdle....
US20070186585 Oval-cut diamond  
An oval-cut diamond comprises a girdle having a contour line in an oval or oval-like shape, a crown above the girdle having an octagonal table facet on a top of it and a pavilion below the girdle....
US20100242540 GEMSTONE HAVING A MIRROR-COATED FRONT  
Gemstone (1) having a back (2) tapering to a tip (3), and a front which is cut in a faceted manner (5), wherein regions opposing said tip (3) being mirrored (12).
US20120240622 EMBEDDED GEM AND A METHOD FOR EMBEDDING A GEM  
An embedded gem and a method for embedding a gem are disclosed. An embedded gem includes a first gem and a second gem. The first gem includes a recess. The recess has an opening at the location of...
US20100154473 Round brilliant cut diamond and its incision method  
The present invention discloses a round brilliant cut diamond. The diamond includes a crown, a girdle, and a pavilion, the cut crown includes one regular octagon table, eight first facets, eight...
US20120024009 MULTI-FACETED GEMSTONE FOR MULTI-STONE JEWELRY ITEM  
A gemstone having a crown which includes a multi-faceted crown surface and planar opposed side facets. The multi-faceted crown surface is arcuate from the front to the back of the crown. The...
US20050274144 Multiplet jewelry product and method of manufacture  
A multiplet jewelry product constructed of two or more layers of gemstone material affixed together with a transparent film disposed therebetween to form a composite unit. A translucent image is...
US20150052946 DECORATIVE JEWELRY AND METHODS OF MAKING SAME  
An article of jewelry includes a stone having a viewing surface and a back surface and epoxy. The stone preferably is transparent or translucent in that it preferably internally and externally...
US20090038341 Round brilliant cut diamond and its incision method  
The present invention discloses a round brilliant cut diamond. The diamond includes a crown, a girdle, and a pavilion, the cut crown includes one regular octagon table, eight first facets, eight...
US20140075991 MULTI-COLOR GEMSTONE COATING TECHNOLOGY  
The present invention discloses a gemstone comprising a table, a crown and a pavilion. Certain areas of the surfaces of the gemstone are coated with at least one layer of multi-color thin film...
US20140013801 Hearts & Arrows SiC Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) which may produce a “Hearts &...
US20130055763 Hearts & Arrows SiC Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) which may produce a “Hearts &...
US20080282733 MEMORY GEMSTONES  
Animal or human tissue is digested to extract carbon-containing gases. The digestion process can include hydrolysis, acidogenesis, acetogenesis, and methanogenesis. The step of denitrification can...
US20050081563 Gemstone cut  
A new method of cutting a gemstone known as the “Riemer” cut is provided. The gemstone has a crown portion, a pavilion portion characterized by having four main pavilion facets and a culet base...
US20130213090 Hearts & Arrows SiC Cushion-Cut Gemstone  
The instant application discloses, among other things, a specific set of cutting proportions tailored for the optical characteristics of Silicon Carbide (“SiC”) cushion-cut gemstone which may...
US20160309860 More stable princess cut diamond  
A princess cut diamond having no points, but instead having rounded corners, so that the diamond is more stable, and has a less propensity to have any breakage.
US20120103016 CUSTOM STONES AND METHODS FOR PRODUCING CUSTOM STONES FOR JEWELRY  
A stone for jewelry is provided that includes a first layer made of a first material; a second layer made of a second material bonded to the first layer; and a third layer made of a third material...
US20160166021 ROUND CUT GEMSTONE EXHIBITING EXCELLENT OPTICAL BRILLIANCE  
A gemstone including a substantially round girdle, a crown extending in a first direction from the girdle, and a pavilion extending in a second direction from the girdle opposite the first...
US20090229308 HIGHLY INCLUDED DIAMOND JEWELRY  
A jewelry article having a highly included gemstone is set into a jewelry setting with a layer of black rhodium coated onto the top surface of the jewelry setting such that the layer of black...
US20120291487 GEMSTONE OF NATURAL DIAMOND AND METHOD APPLIED THERETO  
Gemstone of natural diamond, characterised in that the gemstone (1) has two parallel faces (2-3, 4-5) in which the geometric plane that coincides with the aforementioned faces defines the volume...
US20090290141 Matched pairs of gemstones  
A system is provided for certifying two or more gemstones as being a matched pair. The system includes measuring values for at least four physical properties of a multiplicity of gemstones,...
US20080184739 Gemstone setting including a gem faceted to display a plurality of images from an outer focal region  
The present invention includes gemstone settings and methods of manufacturing gemstone settings including a primary gem capable of displaying a plurality of images corresponding to one or more...
US20060086143 Round cut gemstone  
The invention provides an improved round cut gemstone, comprising a girdle, a crown above the girdle, and a pavilion below the girdle. The crown is located between the girdle and a substantially...
US20060032271 Dancing stone for suspending from an article of jewelry  
A stone for suspending from an article of jewelry, the stone having a crown, a pavilion, a table, a girdle, and a culet. The improvement includes a throughbore extending from the crown to the...
US20050160766 Diamond cut  
A mixed gemstone having a brilliant cut crown, a girdle and a step cut pavilion. The step cut pavilion contains eight rib lines running from the girdle to a culet, which can be a line or a point....
US20170181511 METHOD AND SYSTEM FOR GEMSTONES  
A gemstone cut into a round stone and method of cutting a gemstone are disclosed herein. More particularly, methods and systems for preparing gemstones having enhanced brilliance or for enhancing...
US20160007700 ELEMENT FORMING A DECORATIVE PART COMPRISING A RUBBER RECEIVING ELEMENT  
A constituent element of a decorative item comprises at least one hollow recess (3) in a flexible material (2) arranged on a rigid structure (1), the upper ends of the recess or recesses (3)...
US20150305451 NOVEL ARCHED GEMSTONE AND METHOD OF MANUFACTURE  
A diamond, which has a step-cut arched configuration on one end and a baguette-style configuration on the other, comprising a girdle, a top or crown above the girdle, and a pavilion or base below...
US20110239705 DECORATIVE JEWEL AND METHOD FOR CUTTING DECORATIVE JEWEL  
The color stone 1 is formed of a material with a refractive index n of 1.55 to 2.40, and is subjected to round brilliant-cutting. The pavilion angle p and the crown angle c satisfy the correlation...
US20050252241 Diamond cut  
A brilliant gemstone cut, having a crown, a girdle and a pavilion. The crown and the pavilion are both brilliant cut. The crown has a flat table shaped with multiple faceted bezel facets. The...
US20120060557 Cut Product, in Particular Diamond, with Improved Characteristics and Method for Manufacturing Such a Product  
Cut product manufactured from a (semi) precious stone material, more particularly from natural or synthetic diamond, comprising a lower part (pavilion) with a bottom end (culet); an upper part...
US20060026991 Method for cutting diamond and diamond proportion  
To provide a diamond rendering reflective light off the table goldenly brilliant by making a proportion thereof symmetry at any place viewed from an upper face, a side face or a bottom face, first...
US20140013800 JEWELRY ARTICLE WITH FORMED ILLUSION PLATE  
The present invention is directed to an ornament which gives the aesthetic appearance of a gemstone in a setting, but includes an illusion plate in a well so as to accentuate any material resting...
US20080163647 ARRANGEMENT FOR ARTICLE OF JEWELRY  
A jewelry arrangement having a mounting, a main gemstone positioned in the mounting, and a plurality of secondary gemstone positioned in the mounting underneath the main gemstone. The main...
US20130042648 FACET PATTERNS AND ARRANGEMENTS FOR GEMSTONES  
The present invention relates to the cut of a gemstone, and particularly to facet patterns and arrangements for modified round brilliant cut gemstones having fifty-eight facets. In one embodiment,...

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