Razor sharp, lustrous, and transparent Spahlerite crystals to 1.8 cm pn Quartz matrix. The crystals are brown and green in color and of top quality, 5.5 x 5.5 x 2.5 cm.

Pair of intergrown crystal with super color and luster. There is one area of damage on one side near the top, but this piece had so much pop and pizzazz it could not be passed up. Natural, unheated gem Tanzanite crystal, 2.6 x 1.5 x 0.6 cm.

Glassy and lustrous gem Tanzanite crystal that is very gemmy from top to bottom. Complete and undamaged, highly gemmy, overall excellent quality. The clarity and intense blue color on this one is exceptional. Natural, unheated gem Tanzanite crystal, 3 x 1.4 x 1.2 cm.

Yellow Prehnite on a superb, gemmy blue/purple Tanzanite. There is a small ding on the backside of the termination, but regardless, this is one heck of a nice crystal with great luster and color, uniform shape and the nice association with the Prehnite. Illustrated in the Sept.-Oct. 2009 issue of the Mineralogical Record (Figure 84, page 386). 3.3 x 0.9 x 0.7 cm.

Glassy and lustrous gem Tanzanite crystal with purple blue color. Overall excellent quality and good sized. Natural, unheated gem Tanzanite crystal. 50 carats in weight, 3.5 x 2.7 x 0.9 cm.

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

Fine gem Tanzanite crystal with good transparency from top to bottom. Complete all around and undamaged, very good crystal, 2.5 x 1.5 x 1.5 cm.

Good sized gem Tanzanite crystal with good transparency. Complete all around, fine gem crystal, 3.5 x 1.8 x 1.8 cm.

Large cubic crystals, ex. John Barlow collection #3561 (Acanthite specimens #3562 and 3563 are described in his book), 2 x 1.8 x 1.3 cm.