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2019

LMHC Presentation On Sapphires Heated With Pressure (February 2019)

This presentation summarizes the findings of the LMHC group of gemmological laboratories (that includes the Swiss Gemmological Institute SSEF) as of February 2019 on the issue of ‘Sapphire heated with pressure’.

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Age Dating Diamond DNA Emerald Gemmology Geochemistry Jade Methods Organics Origins Other Gemstones Pearl Ruby Sapphire Spinel Synthetics Tourmaline Traceability Treatments

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