is a mineral that belongs to the borate mineral group

It formed by metamorphosis of mudstone and shale or some form of igneous rock

1 carats  incl

Bead Size: 13x9 to 21x12mm

Shape: Checkerboard Table Oval Cut

Pyrite Crystal Cluster | 185.7 Grams | Eagle X Mine, Colorado Classic Prehnite is a mineral that belongsCubic and crystallized pyrite matrix with Marmatite and Quartz crystal cluster. Some of the more important Colorado localities for specimens of well crystallized pyrite include mines at cli max, Gilman, Leadville, Rico, Ouray, Telluride, Creede, Alicante, Alice, and State Bridge. Specimens from each of these localities often have distinctive crystal habits and mineral associations. The Eagle mine is probably best known for its pyritohedral Pyrite