Matches 101 - 150 out of 233 < 1 2 3 4 5 >


Match Document Document Title
5612102 Faceted jewelry ornament with facet grooved for light diffraction  
The present invention provides an ornament composed of a light transmissive material having a plurality of facets, with a plurality of fine grooves formed on these facets to increase brilliancy,...
5599594 Simulated objects  
The specification describes articles which have a three-dimensional appearance even though they comprise a two-dimensional representation of an object. The effect can be achieved by coating the...
5559061 Gem comprised of a glass based on silicon oxide and calcium oxide  
A glass composition substantially comprising silicon oxide, calcium oxide and aluminum oxide, and its use for producing gems.
5533364 Facing marquis halves to form a marquis stone  
A gem for a piece of jewelry is made from smaller gems set by prong settings to provide abutting facets of each in which the line of abutment is substantially invisible to the ordinary observer....
5488839 Enhanced baguette setting  
A jewelry setting for translucent, diamond baguettes in which the position of the baguette gemstones are interleaved with metallic reproductions of the gemstones to create the illusion of...
5477433 Illuminated necklace  
An illuminated necklace is disclosed that includes a metallic chain separated into two chain portions. One end of each portion is connected to a pendant that includes an illuminated element, such...
5462474 Method of facetting a gem  
A method, and product from the method, of faceting a gemstone in which the facets, when combined with the polishing/non-polishing of the facet form an image such as the Star-of-David. The image is...
5454234 Process and resulting jewelry stone product  
A jewelry stone assembly comprises upper and lower stone portions which are adhesively attachable to each other at mating surfaces. One or more blind cavities are formed in the mating surface of...
5437167 Invisible setting for round diamond stone  
A method and apparatus for invisibly setting round precious stones, particularly diamonds, is disclosed. The stones are provided with grooves cut in a belt portion, which is a faceted portion...
5431028 Metal jewelry article having artificial diamond baguettes formed therein and method of manufacturing thereof  
A metal jewelry article having one or more artificial diamond baguettes formed therein is disclosed. The jewelry article has a reflective metal surface with one or more concave indentations. Each...
5423714 Process for the manufacture of diamond jewellery  
The process serves for the manufacture of diamond jewellery. In order to be able to offer diamonds of individually varying outward appearance and the everlasting advantage of scratch-resistant...
5419159 Article of jewelry  
An article of jewelry having a stone mounted on a support. The stone having two grooves formed in opposite side facets which are engaged by two facing surfaces of the support to secure the stone...
5404731 Play assembly and method for making an item of jewelry  
A play assembly for making an item of jewelry includes a gem setting and an imitation unfinished stone comprising an imitation finished gemstone and an irregularly-shaped, water soluble, outer...
5190024 Diamond sawing process  
A diamond sawing process, in which guidelines on the outer surface of a rough diamond are used for the sawing of up to six pyramid shapes (340) as fragments from a particular piece of tetrahedron...
5186024 High brilliance step-cut stone and method of making same  
A high brilliance step-cut gem stone is formed by cutting natural or man-made gem stone material at a cutting angle of 90° along respective cutting machine indices of 96, 48, 72 and 24 to form a...
5123265 Invisible gemstone setting  
A gemstone assembly includes one or more gemstones and a setting having a base formed with a plurality of ribs defining one or more sockets of polygonal configuration for receiving the gemstones....
5115649 Invisible setting for round diamonds  
A method and apparatus for invisibly setting round diamonds is disclosed. The diamonds are provided with grooves cut in the pavilion below the girdle of the diamond, and a round barrel is provided...
5090216 Enhanced gemstone  
An enhanced gemstone that has a semiprecious gemstone having a crown member with a table surface and a conical seat centered in the table surface. A precious stone is set in the conical seat with...
5072549 Method of cutting gemstones and product  
A method of cutting facets on a gemstone to form a pentagonal shaped gem product such that the cut facets produce a five-legged star to appear beneath the gem table. The gem product produced by...
5072601 Diamond setting  
A precious stone setting, preferably for invisibly mounted diamonds, is obtained by forming cutouts on opposed facets of square-shaped diamonds with a saw which is held at a downwardly pointed...
5003791 Principles and appliances for the cutting of spherical-faceted gems and gems thus obtained  
An introductory outline expounds the visual effects produced when gems are cut with spherical facets, rather than with the conventionally flat ones. An indication follows of some kinematic...
4942744 Self-shining artificial jewelry device  
It is a self-shining artificial jewelry device, which mainly comprises a piece of artificial jewel having a cavity, an illuminating element being mounted inside the cavity, of which the inner...
4920991 Thermochromic artificial nail  
Disclosed is a thermochromic artificial nail comprising an artificial nail having provided thereon a thermochromic layer, which comprises a thermochromic material changeable in visible external...
4835023 Ornamental articles having coating membrane  
An ornamental article comprising a natural ornamental material such as pearl and a cured coating membrane of a composition based on organic materials which is coated on the surface of said natural...
4809417 Method of making a multiplet jewelry product with internally embedded visual indicia  
A multiplet jewelry product constructed of two or more layers of material affixed together having visual indicia secured therebetween is disclosed. Affixation is preferably accomplished using...
4783975 Colored pearl  
A cultured colored pearl comprises a concretion of layers of pearl around the invading material which is a molded article composed predominantly of powders of waste pearls, shells, waste coral...
4725511 High technology decorative materials for watchfaces and fabrication of same  
A novel method is provided for producing high technology decorative materials that incorporates both computer-aided design and semiconductor processing. The high technology decorative materials...
4708001 Faceted gem cut from shallow gemstone material  
A faceted gem having a polished cone-shaped depression cut into the pavillion, said cone being concentric with the vertical axis of the gemstone, and having an included angle at the cone apex of...
4703020 Process for the production of jewelling and ornamental material  
A jewelling and ornamental material comprising many amorphous silica spheres regularly arranged in a three-dimensional array and a zirconium compound filled in pores existing among the amorphous...
4604876 Imitation gem  
An imitation gem consisting of a semi shell of a transparent plastic material with concave inner and convex outer surfaces has light reflecting and light refracting facets formed on both its inner...
4604329 High technology decorative materials and fabrication of same  
A novel method is provided for producing high technology decorative materials that incorporates both computer-aided design and semiconductor processing. The high technology decorative materials...
4555916 Step-cut stone which has been brilliantized  
A step-cut stone with a straight edged polygonal shaped girdle comprising: a generally pyramidal base which is provided with kite-shaped facets extending from the culet toward the vertices of the...
D277942 Diamond  
4490440 High technology jewelry and fabrication of same  
A novel method is provided for producing jewelry that incorporates both computer-aided design and semiconductor processing. The high technology jewelry produced also makes use of microscopic...
D273372 Gem  
4425769 Method for treating a gem and gem treated with this method  
A method for treating a gem stone to cause a marking thereon, wherein a photoresist resin is secured to the stone, a photographic film bearing the desired marking is applied over said resin, said...
4392476 Method and apparatus for placing identifying indicia on the surface of precious stones including diamonds  
A practice for applying indicia to the surface of a precious stone wherein a source of laser energy is directed at the stone surface and controlled to inscribe the surface with the desired indicia.
4353765 Process for making single ornament stones coated with heat-activated adhesive  
An account is given of a process for making separate ornament stones with a heat-activated or thermoplastic adhesive coating, in the case of which a number of ornament stones are adhesively joined...
4308727 Brilliant-cut stone  
A jewel of a brilliant type cut is made with facet angles with respect to the girdle plane as follows: (1) A planar table at φ=0° (parallel of the girdle plane); (2) a pair of angles for one or a...
4306427 Chrysoberyl gemstones  
A chrysoberyl gemstone cut in a modified brilliant style is provided. The gemstone has seven rows of facets, including a girdle comprising rectangular facets. Each row contains eight, ten or...
4295347 Simulated gem  
A simulated gem is made by lacquering a plastic core to a desired pattern with selected lacquer to interfuse the surface of the core to form a unitary article. The core and lacquer have a common...
4269900 Solderless capillary chips  
A solderless capillary chip formed of a corundum-system precious stone such as ruby or sapphire, for use in electrical windings and the like. The inner bore of the chip is enlarged adjacent the...
4262497 Multi-element pleochroic genstomes  
Multi-element transparent gemstones comprising pleochroic materials are provided which evidence enhanced colors or other unusual optical properties, based on the pleochroic behavior of the...
4220016 Skin jewelry  
Decorative jewelry which may be worn on the skin of the wearer. The jewelry has a decorative portion and a flexible and resilient pad secured to the back side of the decorative portion by which...
4219199 Diamond with molybdenum bonded thereto  
A diamond with molybdenum bonded or linked thereto comprises a diamond structure subjected to a pre-sputtering process by causing gaseous ions to impinge on a selected portion of its surface, and...
4142383 Liquid filled sealed glass ornament and method  
A method for the production of decorative objects by providing a viscous liquid and a particulate metal and/or mineral through an opening in a hollow transparent glass envelope and then bonding a...
D250100 Precious, semiprecious or synthetic cut stone  
4118949 Brilliantized step cut stone  
A brilliantized step cut diamond has a straight edged polygonal shaped girdle with sides and corner facets; a crown with a table and a table-and-girdle breaks which are faceted; and a pyramidal...
4118950 Brilliantized step cut stone with faceted crown  
A brilliantized step cut diamond has a straight edged polygonal shaped girdle with side and corner facets, a crown with a table and a table-and-girdle breaks which are faceted; and a pyramidal...
4083352 Method for cutting ornamental transparent gemstones and products produced therefrom  
This invention relates generally to a method for systematically and accurately increasing the brilliance and depth of color of a gemstone without the need to determine the pavilion and facet...

Matches 101 - 150 out of 233 < 1 2 3 4 5 >