Rock & Mineral Encyclopedia

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

Rainforest Jasper

An Australian green rhyolite with eye-like orbs and earthy patterns marketed as jasper, evoking dense rainforest foliage.

A green-and-red ornamental stone of epidote and red piemontite or iron oxide, named for its dragon-skin coloring; not a true jasper.

Clear or smoky quartz threaded with golden to reddish needles of rutile, also poetically called Venus hair stone.

An altered granite mottled pink and green from feldspar and epidote, popular as a tough, colorful ornamental rock.