Strand Length: 37 cm /14

color bands

Size: 15x14mm

named Campo del Cielo (Heaven’s Field in Spanish) that was found in 1576 by Spanish explorers

This is an incredible specimen of cubic green Apophyllite and Stilbite

Biotite Mica Book | Black Crystals | 68.5 Grams | Ontario, Canada | SO24 SaU 001 Strand Length: 37 cm /14This is a sharp, beautiful, black Biotite crystal book from the Calcite Vein Dikes of the Grenville Geological Province Ontario, Canada. This biotite has classic crystal shape and attractive dark black coloration. This specimen is a great example of both, 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.