Neptunite (Twin) - image 1

Neptunite (Twin)

$750.00

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Collector’s EdgeFeatured
753 for sale·296 sold
A VERY RARE matrix specimen of neptunite featuring multiple (!) twins. These x-shaped twins have fascinated collectors of the species, locale, and/or California minerals for years, and are amongst the most desirable specimens that come from this iconic US locality. These interpenetration twins are seldom seen on matrix, and to have 4-5 on one specimen, as seen here, is outstanding.

Product details

Species
NeptuniteAbout Neptunite →
SizeSmall Cabinet
Dimensions5.0 x 4.0 x 6.5 cm
Listed on09/25/2025
Locality
USA, California, Benitoite Gem Mine; Dallas Gem Mine area, San Benito River, New Idria District, Diablo Range, San Benito Co., California
SKU78981

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.
Regional guide
Neptunite from Benitoite Gem Mine; Dallas Gem Mine area, San Benito River, New Idria District, Diablo Range, San Benito Co., California
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