Bicolor Double-Eye Tourmaline
A tourmaline displaying different colors of chatoyancy on opposite sides of a double cabochon is examined.
Unusual Pink Sapphire Bead
A pink sapphire bead with drill holes revealing ruby fragments is examined.
Iridescent Musgravite
A musgravite specimen’s inclusions result in an optical phenomenon unusual for the material.
Introduction to the Micro-World of Gems
G&G’s new column takes a closer look at the hidden wonders found in gemstones.
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