Rock & Mineral Encyclopedia

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

White Garnet

The rare colorless-to-white grossular garnet, also called leuco garnet, prized by collectors for its purity and unusual lack of color.

The blue-green gem variety of microcline feldspar, often mottled with white, prized as an affordable ornamental stone.

A white, porous borate mineral webbed with gray-black veins, widely dyed to imitate turquoise and other stones.

An opaque, porcelain-white common opal prized for its milky, pearl-like appearance and high porosity, often carved or beaded.

A black volcanic glass speckled with gray-white cristobalite snowflakes, formed as obsidian begins to crystallize.

A banded variety of chalcedony quartz, classically black or black-and-white, long favored for cameos and beads.

A chalcedony agate with soft, billowing cloud-like masses of gray and white suspended in a translucent body.

A dark gray-to-black feldspar variety of moonstone that shows blue and white adularescent flash against a smoky body.

A white to grayish banded chalcedony, the natural base color of much agate and the substrate for many dyed stones.

A silver-white cobalt arsenic sulfide that is a leading ore of cobalt, forming bright metallic cubic and pyritohedral crystals.

A magnesium carbonate mineral, usually chalky white with grey veining, widely dyed to imitate turquoise and other stones.

A famous white to blue-grey Italian marble from Carrara, prized for centuries by sculptors and architects for its purity and fine grain.

A finely banded agate from Botswana known for delicate parallel layers of grey, pink, and white.

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

Black volcanic glass studded with oval, peanut-shaped grey-white spherulites of radiating crystals frozen in the glass.