Abstract: 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 the jewelry is attached to the skin of the wearer. The decorative portion, in specific embodiments, may be a precious stone or an artificial stone or a look-alike, which in one embodiment changes color in response to the amount of body heat transferred from the wearer.

Abstract: 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 molybdenum bonded to said diamond structure, which has been subjected to said pre-sputtering process, by a sputtering process, forming a molybdenum film of 10 to 50 A in thickness bonded or linked with the diamond and which cannot be dissolved with hydrogen peroxide. The diamond may be in the shape of a record stylus which has been soldered to a stylus holder by coating the molybdenum film with copper, or other metal suitable for cementing by solder.

Abstract: 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 cap over the opening with a resin impervious to said liquid is described. The refractive index of the viscous liquid and glass are approximately equal visually. The viscous liquid is preferably glycerine admixed with clear miscible solvents which reduce the viscosity depending upon the metal or mineral used. The liquid is provided through the opening in the hollow glass envelope without wetting the sides of the opening in a manner which leaves a gas (air) pocket inside the envelope adjacent the opening and above the liquid and then a cap is bonded over the opening adjacent the gas pocket. The decorative object is preferably in the form of jewelry, such as earrings or pendants.

Abstract: 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 base having a point culet, a culet break and a girdle break with ridges extending from the culet to the corner of the girdle. A fan with three pairs of triangular halves is disposed symmetrically about each ridge with a triangular facet in each corner of the base having an edge which is colinear with the edge of a corner facet and an apex at a ridge. The angle between the culet break and the plane of the girdle is between 30.degree. and 43.degree..

Abstract: 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 base having a point culet, a culet break and a girdle break with ridges extending from the culet to the corner of the girdle. A fan with three pairs of triangular halves is disposed symmetrically about each ridge with a triangular facet in each corner of the base having an edge which is colinear with the edge of a corner facet and an apex at a ridge.

Abstract: 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 angles by trial and error.

Abstract: A turquoise is impregnated with a monomeric diester having two spaced apart polymerizable monoolefinic groups, said diester having a plurality of supplemental hydrophillic groups and a volatility corresponding to a boiling point within a range from about 150.degree. C to about 300.degree. C. Whatever moisture may be sorbed on the turquoise is encapsulated within the plastic during the in-situ polymerization, inasmuch as such sorbed moisture can associate with such supplemental hydrophillic groups having an affinity for water. The dimethacrylate ester of triethylene glycol has two supplemental ether groups which tend to have affinity for water. Thus the monomer is sorbed on surfaces displacing any sorbed moisture in the internal pores or fissures in the turquoise, whereby the impregnation of the turquoise is feasible without critical control of vacuum drying and/or related preparatory steps.

Abstract: Improvements are provided in reaction vessel construction used in the growth of diamond by the process disclosed in U.S. Pat. No. 3,297,407 -- Wentorf, Jr. In assembly of the reaction vessel of this invention, the plug of catalyst-solvent material is disposed between the source of carbon and the diamond seed material as in the Wentorf, Jr. patent and, in addition, the diamond seed material is separated from the catalyst-solvent plug by means for isolating the diamond seed material from the catalyst-solvent material until after the latter has become saturated with carbon from the source of carbon. In addition, preferably the under surface of the plug of catalyst-solvent metal is covered with means for suppressing diamond nucleation. The nucleation suppressing means is usually in the form of a disc and may completely cover the underside of the catalyst-solvent plug or may have a hole therethrough in juxtaposition to the diamond seed/isolating means combination(s).

Abstract: A diamond with an inscription comprises a diamond gem structure having an outer surface cut and polished into a specific shape and a microscopic inscription formed at a specific position on the outer surface of the diamond gem structure. The inscription has a pattern indicating the results of expert appraisal of the diamond gem structure. The inscription may be formed by a method including cleaning a selected portion of the stone surface, depositing a layer of metal thereon, coating the metal with a photoresist film, producing thereon a photo impression by using a mask, developing the impression, etching away the uncoated metal portions and then removing the photoresist.

Abstract: Diamond crystals of controlled impurity content and/or impurity distribution and reaction vessel configurations for the production thereof are described. Combinations of "dopant," "getter" and "compensator" materials are employed to produce gem stones of unusual color patterns, or zoned coloration, using specific reaction vessel configurations.

Abstract: The appearance of a corundum crystal is altered by subjecting the crystal to an elevated temperature while maintaining the crystal in contact with a powder comprising a major amount of alumina and a minor amount of a metal oxide colorant.

Abstract: Improvements are provided in reaction vessel construction used in the growth of diamond by the process disclosed in U.S. Pat. No. 3,297,407 -- Wentorf, Jr. In assembly of the reaction vessel of this invention, the plug of catalyst-solvent material is disposed between the source of carbon and the diamond seed material as in the Wentorf, Jr. patent and, in addition, the diamond seed material is separated from the catalyst-solvent plug by means for isolating the diamond seed material from the catalyst-solvent material until after the latter has become saturated with carbon from the source of carbon. In addition, preferably the under surface of the plug of catalyst-solvent metal is covered with means for suppressing diamond nucleation. The nucleation suppressing means is usually in the form of a disc and may completely cover the underside of the catalyst-solvent plug or may have a hole therethrough in juxtaposition to the diamond seed/isolating means combination(s).

Abstract: An artificial ornamental stone of cabochon shape comprising a transparent light or yellowish brown matrix in which are embedded parallel to the base of the stone transversely orientated parallel fibers with greenish yellow transparent cores having a selected index of refraction clad in transparent sheaths which may be defined by the matrix and have an index of refraction less than the cores. In producing the base material for the stone, the fibers may be clad in one or more sheaths and embedded in the lower melting point matrix or the fibers may be unclad or partially clad and mixed with lower melting point and lower refractive index fibers and the assembly fused into an integral mass. The stone may be covered with a thin colorless, transparent, hard protective coating.

Abstract: A step cut stone with a straight edged polygonal shaped girdle has a generally pyramidal base and a crown with at least girdle and table breaks wherein at least one of these breaks is cut with triangular shaped facets.

Abstract: An ornament is produced by drying an animal dropping, removing the natural outer coating to expose the interior grain and treating the dropping with a plastic or synthetic resin to form a hard transparent coating. The resulting product is an ornament that can be used to form a necklace, brooch, cuff links or other attractive jewelry piece.

Abstract: A jewel for wear by television actors which consists of light-reflecting light-transmitting material. The jewel has cusps with external surfaces which reflect rays of light frontally approaching the jewel at Brewster's angle, thus substantially eliminating or greatly diminishing the amount of reflected light from such rays. A layer of carbon black may be used to absorb light portions which enter the jewel.

Abstract: Costume jewelry is manufactured through photofabrication processes from flat metal sheets to form items such as earrings and small pendants. A standard photo-fabrication operation includes covering a metal sheet with a layer of photosensitive, chemically resistive material commonly referred to as a photoresist. Portions of the covered sheet are exposed to light to outline the earrings and pendants on the sheet. The sheet is then developed and the exosed metal surface portions are chemically etched to remove excess metal and form the earrings and pendants. Thereafter, surface treatments involve supplementary photofabrication operations to provide different colors and finishes on the earrings and pendants by etching, plating and staining the exposed metal surfaces, all of which are supplemented by the retention of portons of photoresist layers of selected colors.

Abstract: A corundum crystal whose surface is altered by contact with a powdered metal oxide colorant at an elevated temperature within the range of 1600.degree.C to a temperature below the fusion temperature of the said powder, said metal oxide colorant consisting essentially of an oxide of titanium and at least one metal oxide selected from the group consisting of iron, chromium, vanadium and nickel, said metal oxide colorant being sufficient to impart color to the surface of the crystal.

Abstract: Opalescent-appearing compositions are prepared by dispersing conjugated diene/vinyl aromatic compound copolymers in a suitable solvent. Encapsulated compositions of this invention display the colors and brilliance of precious opal.