Alüminyum silikatı ve florinden oluşan, kahverengi veya soluk sarı renkte değerli taş.
Formülü Al2SiO4F2 olan, ortorombik sistemde kristallenen, kıymetli taş olarak kullanılan, renksiz, açıkmavi veya açık sarı renklerde bulunan alüminyum ve flor silikatı.
Kahverengi veya soluk sarı renkte değerli bir süs taşı.
Topaz.
Mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades.
It sometimes occurs massive and opaque.
It is a fluosilicate of alumina, and is used as a gem.
The name given to the metal or when borne by peers.
White, yellow, blue, gold, orange Natural blue and yellow are popular and reasonably priced Unfortunately, the blue gets confused with artificially coloured stones.
Either one of two species of large, brilliantly colored humming birds of the Topaza, of South America and the West Indies.