Elongated Calcite crysals associated with sky blue Barite crystals. This is an old specimen and though there are a couple missing Calcite crystals, it's in great condition overall and the main Calcite crystals are perfect and 3cm tall. The only one like it I've ever owned, and I only find one similar on Mindat.

Large, chunky Hematite crystal with an uncommon psuedocubic form. Great luster with parallel surface striations. This is an old specimen from a collection dating back to the 60s and 70s. It came without precise locality information, but I suspect it is from the Casa de Pedra mine in Congonhas, Minas Gerais. It's complete all around with some indentations from other crystals on top near the back, but remarkably pristine with only a couple small nicks. Even the bottom is rehealed. Weighs 2 pounds and 14 ounces!

Two interpenetrating transparent Fluorite cubes with rich purple color. In great condition with good luster. Main crystal is 6.2cm on the diagonal.

Snow-white Barite blades, with some amber colored, over a matrix coated by drusy Sphalerite.This is out of an old collection built in the 60s and 70s and no further locality information was available. Clean and undamaged, good from both sides.

Well formed large Ferberite crystals associated wtih transparent Quartz crystals. There are also small purple Fluorite crystals, Muscovite, and Arsenopyrite present.

Large 3cm black Spinel crystal on matrix with other smaller Spinel crystals. This is an old specimen from a collection from the 1960s and 70s, and unfortunately there was no  locality information available. I believe it to be from an old, lost locality in Riverside Co. It occurs with Chlorite and appears to have been partially etched from carbonate rock. It rates as a significant California Spinel. Undamaged.

Small Calcite crystals atop crystalline Copper with good patina. Calcite and green Epidote on the backside.