Heliodor

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Overview

Heliodor is the yellow to greenish-yellow gem variety of beryl (Be₃Al₂Si₆O₁₈), coloured mainly by iron. It is also called golden beryl.

Identification characteristics

• Mohs hardness 7.5–8
• Streak: White
• Lustre: Vitreous

Formation and occurrence

Granitic pegmatites

Pegmatites and related hydrothermal environments

Common uses

Gemstone and jewellery