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Later developments in Be diffusion of blue sapphires created some very... | Download Scientific Diagram
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Diffusion treatment of corundum: a history, current practices, and how to test for it.
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Sapphire | natural, diffusion, blue, round cut 5 mm, VS, 0.5ct, Ceylon | Eden Garden Jewelry™
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IGL Gem Testing Laboratories - SURFACE DIFFUSION TREATMENT IN SAPPHIRES AND ITS IDENTIFICATION Surface diffusion is an enhancement method in which certain natural elements that cause color, such as CHROMIUM, IRON or
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Blue Sapphire Treatment Guide - Natural, Heated, Diffused Sapphire
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Gem School - Gemology School - Gemologist School
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Don't Fear the Beryllium Diffused Sapphire Reaper - Antique Sage
Natural Blue Sapphire Diffusion AAA Octagon Faceted Loose Stones (5x4mm - 7x5mm) | eBay
