The sapphire showed a small color shift from bluish violet in the daylight to pale blue in incandescent light ... too weak for the color treatment of corundum (see K. Nassau, Gemstone Enhancement, ...
This sapphire from Kashmir has an intense velvety blue color. – Photo: Robert Weldon/GIA. Sapphire is one of the Big three of jewelry colored gemstones—the other two are ruby and emerald. A durable ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback