Rock & Mineral Encyclopedia

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

Pink Agate

A soft pink banded chalcedony, occurring naturally in delicate hues and also commonly produced by dyeing.

A pink to rose volcanic glass; some is natural iron-tinted obsidian while much sold commercially is color-treated glass.

A massive green-to-pink hydrogrossular garnet from South Africa used as a jade simulant, not a true jade.