Yellow scalenohedral Calcite crystals, each with sharp phantoms, possibly partially due to Cinnabar. This is a rare specimen from the old mercury mining district of Terlingua, located near the Mexican border. Cinnabar was discovered here in the 1880s, creating a temporary mining town, now nothing remains but a ghost town. This specimen is out of an old collection from the 1970s and comes with an old Fraziers Mineral label. A little bit of tip damage but overall in great condition.

Large arborescent group of Copper crystals coated by Cuprite. The Cuprite covers a majority of the surface of the Copper. There is also black Heterogenite and green Malachite present in areas. Large and colorful Copper specimen found in 2018.

Group of Copper crystals coated by Cuprite. The Cuprite covers most of the surface of the Copper and is crystallized in areas. There is also black Heterogenite and green Malachite present in areas. Large and colorful Copper specimen found in 2018.

Milpillas has produced some of the most beautiful Azurite specimens in recent time. Here's 3-dimensional cabinet size matrix specimen with dark, highly lustrous, blue crystals. The Azurite actually covers the top of the matrix and crystals grew over the edge on one side. The opposite side shows green Malachite coverage. Only very minor contact to the Azurite crystals, most of which is natural wall contact. An excellent example.

A display specimen of white Calcite crystals hosting a few dark black Hematite crystal groups from this classic locality. An older example from The Charlie Key Collection disbursed a number of years ago. One old label shows a former price of $600. Lots of lustrous, clear and undamaged Calcite crystals and I can only find a couple missing along the back edge.

Here's an old English classic that features a large 1.8cm 'ball' of tan color Siderite crystals on a contrasting darker matrix of Cookeite from Cornwall. A very clean, aesthetic old-timer with numerous provenance labels including William Severance, Carter Rich, and Arnold Fisher. An old Trinity Minerals label shows a price of $300.

This specimen has water-clear fluorite crystals positioned on massive white calcite. A few grey-black galena crystals and some very minor micro pyrite crystals are also in association. The calcite surfaces are smooth showing some evidence of etching. Ex. Frazier's Minerals.

Sharp lustrous scorodite crystals to 8mm, intergrwon with bright golden pyrites. The crystals from slightly translucent blue to darker, almost black.

Large, tapering Quartz crystal with interesting inclusions. The is one of the best, largest crystal from the one and only parcel I've ever seen of this material. The core is filled with hair-like crystals and green, yellow and red coloration. The outer zone is transparent to translucent. Complete and undamaged.

Small black crystals of Murdochite, a lead copper oxide, on crystals of Quartz. 

Large specimen of Copper and Cuprite. The surfaces are primariy showing Cuprite with small areas of Copper protruding out. An old label indicates it was found at the 26J Stope, 1300 Level of the Cole Shaft in 1967.

Large specimen of Amethyst with white scalenohedral Calcite crystals. Showy and undamaged.

54 specimens of Amethyst, many of them scepters. Specimen sizes are generally 1 to 2 cm in size. For reference, each box is 2.7cm square, and the entire flat is 18 x 26cm.

Cluster of deep green, terminated Tremolite crystals. Partially double-terminated. Great color.

Milpillas has produced some of the most beautiful Azurite specimens in recent time. Here's 3-dimensional matrix specimen with dark, highly lustrous, blue bladed crystals. Only very minor contact to the Azurite crystals on back side not in the main view.