Oligoclase

Varieties | Names:

Sunstone

A variety of albite; plagioclase feldspar with an albite:anorthite molar ratio ranging from 90:10 to 70:30.

See:

Albite

Material from ‘Repository’

5 specimens: 0072 — 0.96 ct, Madagascar; 0274 — 1.61 ct, Madagascar; 0285 — 0.96 ct, Madagascar; 0622 — 6.63 ct, no precise locality [Africa]; 0623 — 7.49 ct, no precise locality [Africa].

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Gemmology — gemstones
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.