- Benitoite, Natrolite
- Small Cabinet, 8.7 x 7.4 x 3.9 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
This unusual specimen features very flat, 2-dimensional benitoite crystals that are just strange in appearance, quite different from the normal thick crystals of darker blue or gray-blue. Even the color here, is unusual. The largest benitoite is to 2.4 cm in size. Apparently, this is an old habit, as I had not seen the like from any of the recent production when the pit was (mostly) mined out some years ago and benitoite was briefly more abundant on the market.