Smoky Quartz cluster from Diamantina, Minas Gerais, Brazil

A rare iron phosphate mineral, Strengite, from Arkansas. 

Tsumeb Mine – Otjikoto Region Namibia

Spectacular crystals 9.5 x 6.2 x 1.5 cm

Stunning color contrast of green Siderite “Blades” with brassy, iridescent Chalcopyrite crystals in this specimen. Several of the Siderite blades are 1-inch long. The luster of the Siderite is vitreous to pearly while the Chalcopyrite has a brilliant metallic luster.

Large Hessonite crystals with adamantine luster. Color is reddish-orange to brown. Largest Hessonite crystal is 4-cm long. Another is 2.7-cm. Minor Vesuvianite (green) in matrix.

Chalcopyrite and Siderite combo

Stunning color contrast of green Siderite “Blades” with golden Chalcopyrite crystals in this specimen. Several of the Siderite blades are at least 2-cm long. The luster of the Siderite is vitreous while the Chalcopyrite has a brilliant metallic luster.

This piece glitters! Stunning color contrast of green Siderite “Blades” with brassy iridescent Chalcopyrite, whitish Calcite, and gray Tetrahedrite crystals in this specimen. The green blades of Siderite in this piece are very rare! Several of the Siderite blades are at least 0.5 inch long. The Calcite crystals are flattened and translucent. The luster of the Siderite is vitreous while the Chalcopyrite and Tetrahedrite have a brilliant metallic luster.

Tsumeb

5.6 x 4.7 x 3.9 cm

Specular Hematite crystals on Quartz

A nice crystal of Beryl var. Aquamarine with a hollow tip from the Medina Mine in Brazil. 

Petroleum-included Quartz