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
![Later developments in Be diffusion of blue sapphires created some very... | Download Scientific Diagram Later developments in Be diffusion of blue sapphires created some very... | Download Scientific Diagram](https://www.researchgate.net/publication/265200028/figure/fig12/AS:668362501791757@1536361446486/Later-developments-in-Be-diffusion-of-blue-sapphires-created-some-very-unusual.jpg)
Later developments in Be diffusion of blue sapphires created some very... | Download Scientific Diagram
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