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 Agate

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

A patterned common opal with mottled, leopard-like spots and blotches, prized as an ornamental and cabochon stone.

A soft, fine-grained, translucent form of gypsum (or banded calcite) long prized as a carving and ornamental stone.

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

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

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

A fiery jasper whose red, orange, and yellow plumes lick across the stone like flames against an earthy background.

A translucent agate whose mineral inclusions resemble miniature landscapes of trees, hills, and horizons within the stone.

An affordable multicolored banded and mossy chalcedony from India, common in tumbled stones, beads, and meditation pieces.

An opaque, iron-rich variety of microcrystalline quartz known for its deep brick-red color and ancient history as a stone of strength and grounding.

Translucent banded calcium-carbonate stone deposited in caves and springs, prized for ornamental carvings despite its softness.

A creamy pink-and-white chalcedony from Madagascar containing flower-like plume inclusions that resemble blossoms suspended in stone.

A tourmaline displaying two or more distinct colors in a single crystal, prized for natural color zoning like watermelon and bicolor stones.