This is a gorgeous 111 grams perfectly shaped natural untreated Indochinite Tektite from Maoming City

The matrix is massive augite and scapolite

Its dimensions are 33x26x4mm

Name: Obsidian Sphere

is from the Greek eidos “form”

Biotite Mica Book | Black Crystal | 45 Grams | Ontario, Canada | SO24 L5-6 This is a gorgeous 111This is a 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 plates or