"orange de méthyle"

Demonstrates irregular breakage of minerals.

Beginner’s Collection Illustrates Important Physical Properties

Our most popular collection.

Specimens illustrate important stages of mineral formation.

Dive into the colorful world of fluorescent minerals with this all-in-one educational set.

Beautiful, violet-pink cleavage books of this uncommon lithium mica.

Deep purple, cubic crystal cluster.

Beautiful, blue, hexagonal, sapphire crystals. Average size: 3/8". Madagascar.

Sharp, brown, twinned, orthorhombic, ³/₈– ¹/₂".