Pleochroism in an iolite cut stone
Wall Art and Photo Gifts from Mary Evans Picture Library
Pleochroism in an iolite cut stone
This iolite (magnesium aluminium silicate) is displaying pleochroism, a varied colour effect as the gem is turned. See also 3960
Media ID 8601975
© Mary Evans / Natural History Museum
Aluminium Aluminum Cordierite Corundum Corundum Group Cyclosilicate Gemstone Hematite Group Iolite Magnesium Mineral Native Metal Oxide Oxide Mineral Pleochroism Sapphire Silicate Silicate Mineral Sparkle Sunstone
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