Thin, tan rock matrix with a crown of red Vanadinite crystals across the top. The Vanadinite crystals reach 1.4cm wide and are undamaged. Clean looking miniature specimen.

Transparent to translucent Scheelite octahedra to 2.2 cm on Muscovite. Aesthetic stacked group of crystals.

Blocky, barrel-shaped deep red Vanadinite crystals on matrix. The main crystal is an impressive 1.6 x 1.6cm in size. There is chipping to some small edge crystals along the left bottom, otherwise perfect.

Well isolated green Ludlamite crystals on matrix. Main crystal is a gemmy 1.1cm crystal with great color and luster. These are old USA classics now hard to find of this quality.

Gem quality Orthoclase (Feldspar), a rarity for the species. Colorless and totally transparent with good crystal faces.

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.

Complete octahedral crystal of red Spinel. Undamaged with high surface luster and gem zones internally.

Intergrown spinel-twinned crystals of purple Fluorite. Complete all around and undamaged with a bit of attached Feldspar on part of the backside.

Prismatic Chalcocite crystals with high metallic luster. Collected in 1981 by Ken Coburn.

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.

Cluster of Chalcocite crystals with a mixture of satiny and metallic luster. Nothing but great crystals on this specimen with no matrix. 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.

Cluster of thick, chisel-terminated Brochantite crystals with individual crystals to 8mm tall.