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.

Crystal cluster of Tennanite after Azurite from Tsumeb. Elongated, primatic crystals of former Azurite that have been pseudomorphed to Tennantite. An undamaged floater cluster with individual crystals to 4.5cm in length.

Robust single Wulfenite crystal from Tsumeb. The crystal is a floater, complete all around and nearly pristine with just a couple very slight chips. Ex. Bob Reynolds collection with his collection number and small plastic display stand attached to the back.

Tall, slender crystal of Azurite partially pseudomorphed to Malachite with Arsentsumebite from Tsumeb. The crystal rises up off a 'matrix' of other partial crystals. The Azurite areas have glassy luster while the Malachite has a velvety luster, contributing to a contrast of textures and colors that work exceptionally well together.  A Tsumeb classic... Comes with a couple old labels, including one from Anton Berger (a German mineral dealer who specialized in Tsumeb specimens) and another that shows an old price of $1250.

Cluster of Dioptase crystals from the Tsumeb Mine in Namibia. This is an old specimen from the Dr. Abraham Feinberg collection composed of nothing but lustrous Dioptase crystals, most showing areas of transparency. The best crystal is doubly-terminated and 1.5cm long.

Dark red Cuprite crystals, glassy Cerussite on white Dolomite.