Heliodor
Heliodor is a cyclosilicate mineral valued for its hardness and gem potential.
About Heliodor
Heliodor belongs to the cyclosilicate class in the beryl group and has the chemical formula Be3Al2Si6O18. It crystallizes in the hexagonal system and ranks among the harder species, with lasting durability.
Identification & care
Specimens usually show prismatic hexagonal; typically well-formed striated crystals. Its color is typically yellow to golden-yellow and yellow-green. The luster is vitreous, the streak is white, and specimens range from transparent to translucent. The cleavage is imperfect basal. The fracture is conchoidal, which aids identification.
Collector context
Collector notes
Among gem-quality species, Heliodor holds a distinguished position in collections.