Glassy and lustrous gem blue/yellow Tanzanite crystal, even more glassy and transparent in person. Complete high quality crystal. Natural, unheated gem Tanzanite crystal with unusual coloration.

Fine gem Tanzanite crystal with good transparency from top to bottom. Complete all around and undamaged, 2.2 x 1 x 0.8 cm.

Large cubic crystals of metallic grey Acanthite from Guanajuato, Mexico. A superb, complete and pristine thumbnail sized specimen from the John Barlow collection (Barlow specimen #3561).

Fine thumbnail acanthite with mulitple crystals culminating in a large, sharp 1.5cm cubic crystal at the tip. Better in person, 3.1 x 1.5 x 1.5 cm.

Large single Hausmannite crystal with a few smaller crystals attached. Main crystal is 2.7cm tip to tip. A kalahari classic now hard to find.

Thick, curving, ropey Silver wires protruding out from all sides of a group of Acanthite crystals. This is a natural specimen purchased from the initial finds and one of few that were available. Excellent thumbnail!

Well formed Acanthite crystals with individuals to 1.3cm. Complete all around. Good silvery luster.

Tabular gem Clinozoisite from Tormiq Valley in Pakistan.  A complete all around glassy and gemmy single crystal of high quality.

Single Peridot crystal with good green color and transparency. Complete all around. Good Peridot crystals such as this have crisp, sharp edges versus the more commonly seen crystals with rounded edged.

Thick, blocky deep blue Azurite crystals from the Bou Bekker Mine.  A complete all around, undamaged floater cluster. This is one of the best I've seen from this find.

Single red crystal of 'Ruby Silver' from the most important mine for this species in the world. Bright and translucent red when backlit.  A complete,terminated single crystal of one of the 'Holy Grail' species for mineral collectors rarely seen for sale.