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Benitoite

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A fine crystal of the rare barium-titanium silicate Benitoite with one edge 1.8 cm wide, embedded in blue tinged Natrolite from the Dallas Gem mine in the New Idria District of San Benito County, California. This locality also goes under the name of the California State Gem Mine and is situated on Santa Rita Peak. This primary crystal is mainly opaque inky blue yet one corner is translucent lilac. A much smaller Benitoite crystal, measuring about 2.5 mm, sits adjacent to the large crystal on a patch of white Natrolite. Such specimens have been etched out from the enveloping Natrolite using hydrochloric acid. This is a lovely small miniature of the species.

Product details

SpeciesBenitoite
SizeMiniature
Dimensions3.8 x 3.4 x 2.0 cm
Added on12/02/2024
Current owner
Unknown Owner
Acquired
Mar 2026
Previous owners
DateCollectorAcquisition price
—Crystal ClassicsNot disclosed

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Benitoite
Mineral guide
Learn about Benitoite
rare barium titanium cyclosilicate with sapphire-blue, sharp triangular crystals and vivid UV fluorescence; locality California State Gem Mine.
Benitoite
Regional guide
Benitoite from Benitoite Gem Mine
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Locality guide
Benitoite Gem Mine
Benitoite Gem Mine, USA - California state gemstone locality famed for sapphire-blue benitoite crystals on natrolite, with rare paragenesis and collector value.