Specimens

Gemmy, sherry-colored crystals and sections approximately 3/8– 1/2"

Feldspar group; pink cleavages showing perthitic texture, common potassium feldspar, Mohs’ hardness of 6.

Light gray, compact, hard, opaque, microcrystalline silica mineral.

Red, classic oolitic texture.

Brown, fluorescent crystals intergrown in dolomite rock.

Crystals and crystal sections up to 1", Mohs’ hardness of 9.

Clear, euhedral points and sections.

Great for geology hardness tests.

White, fibrous, silky luster.

Cleaned, pure, bright, metallic native copper.