Dr. Clive Washington
Senior Lecturer, University of Nottingham, U.K.
Articles by Dr. Clive Washington
Tin, Corian, and Ceramic Lap Testing
Which laps and polishes can produce the flattest facets and sharpest edges on gemstones? Our lap testing compares tin, Corian,...
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A Simple Method for Transposing Faceting Angles
Can something akin to a slide rule help novice faceters today with transposing faceting angles from published gem designs? Check...
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Gemstone Radiation Treatment
Gemstone radiation is a common but little understood technique for altering colors. Learn how it works and what gems usually...
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