SAPPHIRE is now one of the most in-demand materials in watchmaking, but a decade ago, Richard Mille seems to be alone in ...
The gemstone spinel, known for its vibrant colors resembling gems such as rubies and sapphires, has now been shown to be ...
Established in 1931, the Gemological Institute of America (GIA) is the world’s foremost authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading ...
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