Rock & Mineral Encyclopedia

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

Green Marble

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

A pink, manganese-rich variety of zoisite used as an ornamental gemstone, often mottled with white quartz and grey matrix.

A chalcedony agate with red, orange, and yellow plume or banding patterns that rise like dancing flames within the stone.

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

Agate that forms in flat cracks or veins of host rock rather than rounded nodules, producing straight, parallel banding.

A general term for light-colored, fine-grained volcanic rocks rich in quartz and feldspar, like rhyolite.