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His unpolished surface tells the story of nature that shaped him
which is made from the mineral quartz arises
For sale is an exceptional collector 's item ( 232g)
Afghanistan – one of the oldest gemstone mines in the world
and is characterized by mineral inclusions that create unique and interesting designs
Epidot und Bergkristall aus der Türkei (36g) Anlagerungen His unpolished surface tells theEpidote is a mineral from the mineral class silicates and germanates . It crystallizes in the monoclinic crystal system with the general chemical composition Ca (Fe ,Al)Al [O OH SiO Si O ] 1. The brackets in the chemical formula mean that iron and aluminum can represent each other to a limited extent ( substitution), but are always in the same ratio to the other components. Epidote usually forms prismatic crystals from up to 35 cm long , which can be
