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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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Later developments in Be diffusion of blue sapphires created some very... | Download Scientific Diagram
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Inclusions in Sapphire in ruby, Inclusions in sapphire, Inclusions in emerald, Inclusion in spinel, Inclusions in peridot, Inclusions in semi-precious gemstone, Asian Institute of Gemological Sciences