GEM HAVING LIGHT PIPING FIBRES WITH CORES OF HIGH REFRACTVE INDEX AND CLAD LAYERS OF LOWER REFRACTIVE INDEX

摘要

A method of manufacturing gems including artificial gemstones or other works of art displaying the optical effect of single or multi-lined chatoyancy, even asterism, from fiber optical materials. Simulated gemstones of glass fiber optical materials are characterized by hardness, density and refractive index approximating naturally occurring rare minerals, yet the gemstones display beauty and optical effects rarely seen in the natural minerals. Doublet gemstones are also made by mounting natural or synthetic gemstones or light-transmitting materials, normally devoid of chatoyancy or asterism, onto a properly fashioned and oriented fiber optical base plate so that single or multi-lined chatoyancy is fascinatingly observed in such materials as if the materials themselves were chatoyant or asterismal. Gemstones of emerald, ruby, opal, topaz, peridot, amethyst and other transparent or semi-transparent cabochoned gems are provided with chatoyancy or multi-lined chatoyancy, even asterism. Also, natural mineral gemstones which exhibit poor chatoyancy or asterism are provided with enhanced optical effects by mounting onto a properly fashioned and oriented fiber optical base plate. Enhanced chatoyant or asterismal gemstones or chrysoberyl, sapphire, tourmaline and the like are made according to the method disclosed.