Neptunite, Natrolite
Thumbnail, 5.8 x 5.4 x 3.6 cm
Dallas Gem Mine (Benitoite Mine; Benitoite Gem Mine; Gem Mine), Dallas Gem Mine area, San Benito River headwaters area, New Idria District, Diablo Range, San Benito Co., California
A lustrous, 2.3 cm, doubly terminated, black neptunite crystal beautifully nested atop snow-white natrolite-covered matrix from the famous Benitoite Gem Mine of California. SHARP and starkly aesthetic! 5.8 x 5.4 x 3.6 cm