Pleochroism in an iolite cut stone
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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
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Media ID 8601975
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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
EDITORS COMMENTS
This photograph showcases the mesmerizing pleochroism effect in a stunning iolite (MgAl2(SiO4)3) gemstone. Pleochroism is a unique optical phenomenon that causes a gem to display various colors as it is turned. In this image, the iolite exhibits a vibrant blue hue when viewed from one angle, while revealing a rich violet color from another perspective. Iolite, a member of the silicate mineral family, is composed of magnesium aluminium silicate. Its name originates from the Greek word "ios," meaning violet, in reference to its distinctive coloration. The stone's pleochroism is attributed to the alignment of its mineral grains, which causes light to refract differently as the gem is rotated. The iolite in this photograph has been expertly cut to maximize the display of its pleochroic properties. The facets on the stone capture and refract light, creating a dazzling display of colors and sparkle. The metal stand and background add a touch of sophistication and contrast, highlighting the stone's natural beauty. Iolite is often compared to sapphire and is part of the corundum group of minerals. However, it is distinct from sapphire due to its pleochroic properties and aluminum oxide composition. Other minerals, such as cordierite, cyclosilicate, hematite, and oxide minerals, are also part of the iolite's mineralogical family. This photograph is an exquisite representation of the natural wonders that can be found in the mineral world. It invites us to appreciate the intricacies of the geological processes that have formed this beautiful gemstone and the unique optical properties it exhibits.
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