"Freeze-Dried Specimens"

Amazonite

White to gray, medium to coarse-grained, crystalline.

Sale

Feldspar group; white to gray, sodium plagioclase cleavages; some faces may show twinning.

Deep purple crystal clusters.

Bright blue crystalline veins and coatings in a matrix of mixed copper ore.

Cut black mica cleavage sheets.

Bright metallic cubic cleavages; lead ore.

Clear, pure cleavages, Mohs’ hardness of 2.

Good grade, bronze-colored ore, massive.

A textbook example of pure crystalline carbon which is extermely soft.