An EXCELLENT, lustrous, translucent and blocky specimen of the VERY RARE mineral chiolite from Greenland. Chiolite is related to cryolite, but is much rarer and only occurs as massive material. This is a valuable piece of gem rough weighing 28 grams. 3.6 x 2.1 x 1.7 cm
Attribution: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
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