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

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.

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.

Rare double Tanzanite with two crystals attached to each other at the sides, both very gemmy with excellent color saturation. No damage, uncommon.

Killer Tanzanite thumbnail that's also a great association piece too.  Fine, gemmy blue Tanzanite crystal with excellent luster and great transparency with attached large, single Prehnite crystals (analyzed) on the backside. Prehnite from Merelani is usually seen as rounded aggregates, yet on this specimen they occur as individual crystals to 7mm wide. In addition to the Prehnite, there are white crystals of an unidentified mineral also attached to the backside. A very nice Tanzanite, undamaged with TOP luster, good color and highly gemmy.

Single Tanzanite crystal with a Pyrite crystal attached to one side. Pyrite is not unusual from Merelani, but Tanzanite specimens with attached Pyrite are fairly uncommon, especially those with the pyrite perched so aesthetically on the Tanzanite. The Tanzanite is also a bi-color with a yellow termination over a blue body color. Unusual addition to a Merelani suite.

Water clear 2.8cm Quartz crystal attached to the front of a partial Tanzanite crystal. Some small, bright yellow Prehnite crystals add some color contrast to this unusual specimen. The left side of the Quartz crystal is coated by a druse of white Prehnite, and there are even some Graphite crystals attached.