Échantillons

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

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

Deep purple, cubic crystal cluster.

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

Beautiful deep green, prismatic, crystalline spray.

Polished banded slices with colorful translucence.

Hardened natural cement of calcium carbonate that binds other material such as gravel, sand, clay, and silt.

Sparkling pale blue transparent crystals in vug-like matrix. Average size: 2" x 2". Madagascar.

Brilliant blue lab-grown copper sulfate crystal group. Average size: 2" x 2". Poland.