Neptunite with Joaquinite-(Ce)

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An excellent small cabinet display specimen of terminated, prismatic Neptunite crystals measuring to 2.6 cm from the California State Gem Mine in San Benito County, California, USA. Two of the Neptunite crystals are double terminated and all have the characteristic black lustre with occasional flashes of bright metallic red. These contrast perfectly against the snow-white Natrolite covered matrix. In association with the Neptunite, at least five orange microcrystals of the rare mineral Joaquinite-(Ce) are partly exposed from the white Natrolite. A superb specimen.

Product details

SpeciesNeptunite, Joaquinite

SizeSmall Cabinet

Dimensions4.7 x 7.2 x 2.2 cm

Added on10/24/2024

LocalityUSA, California, California State Gem Mine

Current owner

Unknown Owner

Acquired: Jul 2026
Price paid: $1,500.00

Previous owners

Date	Collector	Acquisition price
—	Crystal Classics	Not disclosed

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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 California State Gem Mine, USA

California State Gem Mine, San Benito County - famed for black neptunite with blue benitoite in natrolite, offering dramatic contrast and collector appeal.

Locality guide