Rock & Mineral Encyclopedia

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

Heliodor

The golden-yellow gem variety of beryl, colored by iron, prized for its bright sunshine hue and excellent durability.

The yellow variety of beryl, also called heliodor or golden beryl, colored by iron and valued for its bright color and durability.

The pure golden-yellow gem variety of beryl, colored by iron and valued for its clarity, brilliance, and durability.

A trade name occasionally used for golden-yellow beryl (golden beryl or heliodor), the iron-colored yellow variety of the emerald mineral.