Rock & Mineral Encyclopedia

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

Smithsonite

Smithsonite is a zinc carbonate ore famous for glassy botryoidal crusts in blue-green, pink, and yellow hues.

A bright, fresh lime to yellowish-green elbaite tourmaline (verdelite), colored by iron and trace manganese for a lively spring-green tone.

A trade term for yellow garnets, including golden grossular, yellow andradite (topazolite), and yellow-green Mali garnet.

A vivid green chromium-bearing diopside, an affordable emerald-like gem mined largely in Siberia.

A precious opal showing dominant peacock-like blue, green and teal play-of-color, often on Ethiopian material.

A prized Idaho jasper known for porcelain-smooth pastel pinks, creams, and greens in soft swirling, orbicular patterns.

An opaque blue variety of chalcedony jasper, less common than red or green forms, colored by mineral inclusions.

A sought-after elbaite tourmaline in teal hues that blend blue and green, prized for its ocean-like color.

A prized Mexican jasper known for pastel green, lavender, and cream orbicular patterns that take an exceptional polish.

Tourmaline crystals displaying two or more distinct colors at once, including the famous pink-and-green watermelon variety.