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HELIODOR
Heliodor is a yellow or golden yellow form of beryl and is occasionally found in gem quality. The best quality heliodor is found in Russia. It also comes from Brazil but is found in pale shades from there. Heliodor from Madagascar has a finer color. Other locations include Ukraine, Namibia and the USA.
Crystal Structure: Hexagonal
Hardness: 7.5-8
Specific Gravity: 2.65-2.75
Refractive Index: 1.570-1.590
Colors: Pale yellow, yellow and golden yellow.
Luster: Vitreous
