Neptunite from Benitoite Gem Mine, San Benito County, California, USA - image 1
Neptunite from Benitoite Gem Mine, San Benito County, California, USA - image 2

Neptunite from Benitoite Gem Mine, San Benito County, California, USA

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Lustrous sharp black terminated crystals of neptunite measuring to almost 1.0 cm in size on a white natrolite matrix with small crystals of blue benitoite. In great condition.

Product details

SpeciesNeptuniteBenitoiteNatrolite
SizeSmall Cabinet
Dimensions5.2 x 2.5 x 2.0 cm
Added on11/02/2025
LocalityUSA, California, Benitoite Gem Mine
Current owner
Unknown Owner
Acquired
Dec 2025
Price paid
$325.00
Previous owners
DateCollectorAcquisition price
—Weinrich MineralsNot disclosed

Learn more

Neptunite
Mineral guide
Learn about Neptunite
jet-black, high-luster prisms with natrolite and benitoite; California State Gem Mine specimens exemplify striking contrast, rarity, and display.
Neptunite
Regional guide
Neptunite 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.