NEPTUNITE

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A perfectly terminated jet-black Neptunite crystal measuring 1.8 x 0.5 x 0.5 cm, partly embedded in a small block of snow-white massive Natrolite. From the famous Benitoite Gem min e at Santa Rita Peak, San Benito County, California, USA; this mine is also known as the California State Gem Mine and Dallas Gem Mine. The Neptunite crystal has highly lustrous mirror-smooth faces with one face containing a bright metallic blood-red patch when lit well. An attractive small thumbnail of Neptunite. Show more