GemResearch.ch

Title

GemResearch Swisslab (GRS) Specializing in Origin Determination of Fine Rubies and Sapphires

Description

GemResearch Swisslab (GRS) has invented its own high technology portable gemmological laboratory, computerised and with state-of-the-art spectrometers. GRS Heat Treatment thermal treatment gemmological heat enhancement process clarity color ruby sapphire Gemresearch Swisslab cavities.

Additional Information



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