Two crystals of Huebnerite on Quartz crystals. Each crystal appears to be a twin with a distinct 'fish tail' form. Ex. Chuck Trantham collection.

Undamaged crystals group of Hematite pseudomorphs after octahedral magnetite crystals from the 2002 find in Argentina. Fascinating, highly sculptural specimen with bright, silvery metallic luster. Largest crystals is 2.5cm in size. Ex. Chuck Trantham collection.

Glassy, flower-like cluster of Quartz crystals on a matrix covered by small Calcite crystals. Highly aesthetic, undamaged specimen. Ex. Chuck Trantham collection.

Two connected crystals of Malachite after Azurite pseudomorphs. Rich green with a velvety surface luster. Comes with an old Al McGuinness label.

Transparent, color-zoned 'window pane' style Wulfenite crystal with additional small crystals attached at the base. Highly lustrous, slight edge chipping, good from front or back. There is a small notch along the top edge where another crystal grew. Ex. Bob Reynolds collection.

Double-terminated transparent Calcite crystals with sharp phantoms caused by Hematite inclusions. There are additional smaller crystals sticking out at right angles from the main crystal. Undamaged. Ex. Bob Reynolds collection.

Black Kentrolite crystals on matrix. Kentrolite is a rare lead and manganese silicate mineral. Ex. Chuck Trantham collection.

Blue green crystals of Chalcophyllite on matrix from the now defunct Majuba Hill Mine. Good crystals are present on both the front and back sides of the matrix.

Deep blue crystals of Clinoclase on matrix from the now defunct Majuba Hill Mine. The area of crystals is 4cm wide. An excellent example for the locality and of the species.

Deep blue crystals of Clinoclase over green Cornubite from the now defunct Majuba Hill Mine. Both the front and back have great crystals.

Rough and cut set of transparent blue Gahnite. Gahnite is the zinc rich end member and one of the rarer species in the Spinel group of minerals. The crystal is a complete octahedron with one tiny chip on one tip, otherwise perfect and translucent to transparent internally. The gemstone is 4.5mm wide. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.

Beautiful large specimen of Dioptase on drusy Quartz over Chrysocolla and Malachite. This looks like something out of Africa rather than the USA, but it's old Arizona material with large isolated Dioptase crystals to 7mm in size. A big and colorful Arizona classic that will add pop to a mineral case.

Large rhombic Calcite crystals comepletely coated by thick, large crystals of dark green Mottramite intergrown with a second generation of lenitcular Calcite crystals. Clean and undamaged, an excellent Mottramite specimen.

Bladed groups of long Azurite crystals. Well crystallized all around and pristine. Some areas show etching.

Spheres of blue Rosasite atop spikey crystals of green Aurichalcite.