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Eudialite (Eudialyte) Cabochons from Russia
Eudialyte cabochons are made of a complex silicate mineral that was first discovered in 1819. It commonly forms in granular patterns that contain calcium, cerium, sodium, iron, manganese, zirconium, and yttrium. This stone also sometimes has Black Tourmaline in it, and commonly ranges in color from pink or red to brown, but also violet, and even green.