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Smithsonian National Museum of Natural History
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Photo by Ken Larsen. Click to zoom.
Catalog Number NMNH G11483-00
Locality Nepal
Weight 7.43 ct

Kyanite is a naturally occurring aluminum silicate mineral that typically forms as bladed crystals, and occasionally occurring as radiating masses of crystals. The name kyanite is derived from the Greek word kyanos which means “blue.” Gem quality kyanite has a royal blue color similar to fine sapphire. This material is highly prized by those who cut gemstones. Kyanite can be cut en cabochon, faceted, or fashioned into beads, however its variability in hardness and color zoning can make it difficult to fashion and facet. Transparent intense blue kyanite is considered to be an exotic gemstone because it is not often seen in jewelry. Kyanite is predominately found in shades of blue and green, but it can also be yellow, white and orange. This 7.43 carat gem is an intense deep blue color and the largest kyanite from Nepal in the National Gem Collection.


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