Rock & Mineral Encyclopedia

Search and identify 1,000+ rocks, minerals, crystals, and gemstones — with properties, formation, colors, hardness, and how to tell them apart.

Leopard Opal

A patterned common opal with mottled, leopard-like spots and blotches, prized as an ornamental and cabochon stone.

A green ornamental stone, often serpentine-rich marble or verde antique, valued for its rich green color and white veining.

A rare Indonesian jasper from Sulawesi known for ghostly tube structures, brecciated patterns, and contrasting grey, red, and purple zones.