Rock & Mineral Encyclopedia

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

Silver

A soft, lustrous white native metal with the highest electrical conductivity, used in jewelry, coinage, and industry.

A silver sulfide that is one of the most important silver ore minerals, forming dark metallic crystals and wires.

A colorless, transparent variety of topaz valued as an affordable, hard, brilliant alternative to diamond in jewelry.

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

A gray copper-antimony sulfosalt of the fahlore group, an important ore of copper and often silver, forming tetrahedral crystals.

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

A lightweight black organic gemstone formed from fossilized wood under pressure, a type of lignite long used in mourning jewelry.

A dense, durable, silvery-white precious metal that resists corrosion, used in fine jewelry and catalytic converters.

A pale, silvery schist dominated by paragonite, the sodium-rich white mica, formed in aluminous metamorphic rocks.

A banded, metamorphosed iron formation in which bright red jasper alternates with silvery hematite or magnetite layers.