Method for producing a highly refractive composite gemstone,...

Details Method for producing a highly refractive composite gemstone,... Method for producing a highly refractive composite gemstone,...

2008-06-16

2011-11-15

Lavinder, Jack W. (Department: 3677)

Jewelry

Gem

C063S034000, C427S162000, C427S902000, C428S015000

Reexamination Certificate

active

08056363

ABSTRACT:
A method for providing a protective coating and enhanced optical qualities to a gemstone. The method includes coating a first portion and a second portion of a gemstone with TiO2doped with calcium oxide (TiO2+). The TiO2+ coated gemstone is next coated with a diamond like carbon (DLC) coating. The gemstone may be synthetic or natural. The composite gemstone, having been coated with both TiO2and DLC, exhibits high refractivity and enhanced wear resistance and color.

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