Sharp Neptunite Xtals w/ Natrolite - California State Gem Mine, California For Sale

NEPTUNITE w/ NATROLITE:California State Gem Mine, San Benito Co., California, USA. Dimensions: 9.9 x 7.9 x 3.8cm, cabinet. This is a large and very good display plate of black Neptunite crystals nicely contrasted against white Natrolite with light green-gray serpentinite rock matrix. Dozens of lustrous, jet-black Neptunite crystals are scattered all over the surface of this super attractive piece and remarkably, almost all of them are terminated, some of them doubly terminated! These excellent crystals vary from 2mm to 2cm in length and are nicely distributed on, and in some places in, the snow-white Natrolite. Neptunite is a rare and chemically complex potassium-sodium-lithium-iron-titanium silicate and the this locality is the best in the world for the species! Buyer pays USPS Priority Mail shipping. Thank you for reviewing this listing and see my other items!