Superb, water-clear single Topaz crystal from Katlang. The crystal is fully transparent and internally flawless with a light pink/orange coloration. Aside from one tiny edge nick, it's in perfect undamaged condition. Even brighter and more water clear than the photos. Weighs 28.43 carats.

Aesthetic pair of Tanzanite crystals with rich coloration and high glassy luster. Usually found as singles, this cluster of crystals is uncommon. Complete all around with slight chipping on one termination. This specimen has a really nice blue coloration! Natural, unheated specimen.

Complete single gem quality Tourmaline crystal from the DR Congo. Transparent for it's entire length, the crystal has shades of yellow in the lower half with a more greenish color in the upper half. Complete all around and undamaged (other than a couple tiny chips) with uniform shape and steep pyramidal termination. Weighs 20.51 grams. These are among the world's best Tourmalines and mining at this locality has reportedly ended.

Large, translucent blue/green single Kornerupine crystal from Tanzania. Though crudely formed, this is the largest I've yet seen from this deposit, which has recently been producing small grains most suitable only for gemstones. Kornerupine is an uncommon borosilicate mineral first discovered in Greenland and named after the Danish geologist Andreas Nikolaus Kornerup. Weighs 14.39 grams.

Glassy transparent single Diopside crystal from the Merelani Tanzanite mines - exceptionally bright and transparent. Undamaged gem quality crystal.

Glassy red Spinel crystal from Mahenge with great color and areas of gem transparency (which is rare to find as most of this quality are cut as gems). Has tiny chips on two tips otherwise perfect all around. Uncommon quality.

Single 'Cobalt Blue' Tanzanite crystal from a small recent find. This color, a deep almost silky blue that reminds me of Kashmir Sapphire, is only rarely found (I've only seen it found twice) and reportedly only from one small artisanal mine in the deposit. These crystals are never very large, and this (and P378) were the largest quality crystal I could get.

Single 'Cobalt Blue' Tanzanite crystal from a small recent find. This color, a deep almost silky blue that reminds me of Kashmir Sapphire, is only rarely found (I've only seen it found twice) and reportedly only from one small artisanal mine in the deposit. These crystals are never very large, and this (and P377) were the largest quality crystal I could get.

Single gem quality Tanzanite crystal with an uncommon lemon yellow coloration (a different hue of yellow than 'typical' yellows from Merelani). The crystal is mostly yellow with a blue termination. Complete and undamaged and highly transparent.