Deep green dioptase crystals on matrix, covered by a glistening coat of small, colorless quartz points. Many of the dioptase crystals are incomplete, but an interesting association regardless, and an uncommon Peruvian dioptase locality to boot.

The specimen is composed of mostly massive proustite, with a few partial crystals or crystal faces visible. A knob of whitish quartz at one end. A locality specimen.

A cluster of sharp, transparent to opaque calcite crystals, with stringy brown inclusions. Largest individual crystal is 2 cm long. Very minor wear is noted under 10x magnification, otherwise no damage.

Deep green, opaque olivenite needles to about 3 mm on matrix. Many of the crystals are contacted, but some are terminated. A good reference or locality specimen.

A sharp, transparent to opaque calcite scalohedron perched on matrix. The calcite is 3.2 cm in length, and except for some very minor wear barely seen under 10x magnification, has a pristine termination. Also present are a few lustrous, metallic hematite rosettes which reach about 3 mm across.

A carpet of muscovite hosts a translucent to opaque, butterscotch brown scheelite crystal, lustrous, and 1.3 cm along the crystal edge. Adjacent to the scheelite is a 1.7 cm cluster of sharp, translucent calcite crystals. The scheelite displays strong blue-white fluorescence under shortwave UV (second picture). Sawn back, which is common in these specimens because the host rock can be quite tough. A nice association specimen.

A cluster of colorless adamite crystals to 8 mm in length sit on a rich, dark and glittering chalcophanite microcrystal carpet. All of this rests on a limonite matrix. A few of the smaller adamites are contacted, but the specimen is free of damage.

A nearly flat matrix hosts a group of bright blue aurichalcite needles. Individual aurichalcite crystals reach about 3 mm in length. Sawn back. Sits nicely for display as shown without a stand.

Blebs of off-white smithsonite on both faces of a nearly flat matrix plate. A locality specimen.

A 'toenail' cluster of earthy, opaque vanadinite crystals. The largest crystal is quite stout, 1.3 cm in length, sitting on top of the cluster. A few incomplete crystals along the edges, and minor edgewear is noted at 10x magnification.

A sharp, transparent to opaque Indian apophyllite crystal. OK, so Indian apophyllites are certainly not rare or even uncommon, but this one is notable for the flattened crystal shape. (This shape is more common outside of Indian localities.) The apophyllite subspecies is probably apophyllite-(KF). A good addition to a single crystal or a zeolite collection. No damage.

A 4.3 cm calcite crystal perched on one face of a fluorite crystal. The calcite is transparent to opaque and doubly terminated, although both terminations have been partly or fully cleaved away. The fluorite looks incomplete, but in fact has been heavily etched along the bottom. (Two small cleave areas are visible, but it appears that the original point of attachment to matrix was at the calcite.) The fluorite's color depends on the light source: delicate light purple under daylight fluorescent light (used for the pictures you see here) versus nearly colorless under xenon light.