Orangy Pink Coated "Soft Coral"
Diagnostic Features and Heat Treatment of Kashmir Sapphires
Today, only by combining different gemological tests with years of practical experience, can a conclusive determination of the origin of a sapphire be made.
What Have Diamond Ages Taught Us?
Diamond ages offer insight into continent evolution spanning billions of years.
Suggested Reading on Rubies and Their Inclusions
Suggested Reading on Rubies and Their Inclusions
Data Supplement
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
Color Origin of Lavender Jadeite: An Alternative Approach
Corundum with Spinel Corona from the Tan Huong–Truc Lau Area in Northern Vietnam
Explains the reactions responsible for the formation of a well-developed reaction rim of spinel that surrounds the corundum core in some specimens from this deposit.

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