It weighs 450 grams and features twenty sharp intergrown crystals

promote harmony with nature

Comes with an ELKK Meteorites and a Canagem® Collection specimen card

Phantom quartz is a variety of quartz

Biotite Mica Book | Black Crystal | 55.6 Grams | Ontario, Canada | SO24 Idocrase It weighs 450 grams andThis is a sharp, beautiful, black Biotite crystal book from the Calcite Vein Dikes of the Grenville Geological Province Ontario, Canada. This specimen is a great example of both the classic crystal shape and attractive dark coloration. Biotite is rarely considered a valuable mineral specimen, but it can accompany other minerals and compliment them. In Bancroft, Ontario, Biotite forms large crystals with green apatite and hornblende. Single large