2-5/8 Carat T.G.W. Diffused Sapphire and 5/8 Carat T.W. Diamond 14kt White Gold 3-Stone Engagement Ring - Walmart.com
Blue Star Sapphire (Diffused) 8x6mm Oval Cabochon Loose Gemstone(s) | eBay
Gem-A Live: Titanium Diffusion in Sapphire - YouTube
Diffusion Blue Sapphire Factory - Manufacturer of the only treated sapphire
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