Rock & Mineral Encyclopedia

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

Morganite Crystal

The natural crystal form of morganite, the manganese-colored pink-to-peach variety of beryl popular in romantic jewelry.

The natural crystalline form of emerald, the prized green chromium-and-vanadium variety of beryl and the May birthstone.

The blue iron-bearing variety of beryl, forming clear hexagonal crystals prized both as specimens and as a March birthstone gem.

A transparent, optical-grade variety of calcite famous for strong double refraction, splitting images and light into two rays.

The calcium-iron garnet species, ranging from brilliant green demantoid to golden topazolite and jet-black melanite.

The calcium-aluminum garnet species spanning green tsavorite, cinnamon hessonite, and colorless leuco garnet — one of the most varied garnets.