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Smithsonian National Museum of Natural History

Topaz with elbaite, lepidolite, and albite

Photograph of topaz (148321) from the National Mineral Collection
Photo by Chip Clark. Click to zoom.
Catalog Number NMNH 148321-00
Locality Minas Gerais, Brazil

Topaz is an aluminum silicate mineral, and its crystal habit is typically prismatic with pyramidal terminations. It is renowned for its ability to grow huge gem-quality crystals. Pure topaz is colorless, however impurities can impart many colors. The highly prized imperial topaz is an intense golden to reddish-orange color. More commonly topaz is colorless to pale blue or yellow.This specimen has pale yellow topaz crystals with albite and lepidolite.


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