Chalcocite crystals with satiny metallic luster and slight golden irridescence. A 1cm tall 'drill-bit' twin crystal rises up at the top of the specimen. Collected in 1981 by Ken Coburn.

Well composed specimen of Chalcocite crystals with good crystals all over, front and back sides shown. Undamaged with crystals to 7mm in size. Collected in 1981 by Ken Coburn.

Old specimen of blocky Chalcocite crystals on matrix. Lots of great crystals well dispersed across the top surface. The crystals have a slight blueish irridescence. This specimen was in the MG Weller collection and likely dates back to the 1800s. From MINDAT: From 1815 to 1897, Cook's Kitchen Mine produced 8,859 tons of black tin, 40,920 tons of 5.5% copper ore, 120 tons of arsenic and 222 tons of arsenical pyrite. It is said to have been worked for 130 years prior to 1874, and to have been one of the most productive mines in Cornwall in 1814.

Single well terminated gem quality Aquamarine from Vietnam. Perfect and undamaged. The crystal is facet quality transparent for it's entire length and has the great blue color Vietnamese Aquas are known for.

Single well terminated gem quality Aquamarine from Vietnam. Perfect and undamaged. The crystal is facet quality transparent for it's entire length and has the great blue color Vietnamese Aquas are known for.

Bizarre Calcite specimen composed of worm-like spiraling growths of golden Calcite. Ex. Jim and Dawn Minette collection.

Aesthetic group of upright purple Axinite crystals from the Bor Mine. The clusteris complete all around and have the slightly elongated, slightly curved form typical of Dal'Negorsk Axinite.

Large Copper crystals atop a small amount of hackly Copper and Calcite. The Copper has a deep patina and can be displayed from either side.

Well crystallized, gem quality Topaz crystal. Beautiful, complete blocky form and nearly colorless (the camera picked up more color than my eye sees). Complete all around and undamaged.