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MD-120521
Kyanite
Thumbnail, 3.1 x 0.7 x 0.5 cm
Minas Gerais, Southeast Region, Brazil
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Kyanite is mostly known as boring, opaque, large crystals embedded in quartz. But this specimen is from a find of TRANSPARENT crystals with a very distinctive blue stripe running down the middle. The crystal is doubly-terminated, with the usual rather tough terminations.