Neptunite

Tama Higuchi collection #269

Nice fat, terminated neptunite crystal. This one is unusual in that the natrolite is in its intact, natural form, without any etching usually done to reveal the neptunite/benitoite xls from their matrix.

Product details

SpeciesNeptunite, Natrolite

SizeMiniature

Dimensions2.8 cm

Added on02/19/2026

LocalityUSA, California, California State Gem Mine

Current owner

Tama Higuchi

Dallas, TX

Acquired: Feb 2024

Owner’s note

Mineral Classics, Brian Kosnar

2 for sale·Member since 2025

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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