Ptychopariida is a large, heterogeneous order of trilobite containing some of the most primitive species known. The earliest species occurred in th...

A world-class cluster of perfectly terminated cubic Pyrite crystals, interlocked on it's natural basalt matrix. This is an extremely large and uniq...

Large cluster of lustrous pyrite crystals from Peru. Minor edge imperfections on a few crystals. The crystals are cubic form with slight surface st...

From Mina Navidad, 19 km northwest of Abasolo, Durango, Mexico Lustrous transparent colorless spherical clusters of radiating orange creedite cryst...

From Huanggang Mine, Kèshíkèténg Qí, Chifeng, Inner Mongolia, China Several intersecting doubly terminated quartz crystals colored green by inclusi...

From Touissit Mine, 21 km SSE of Oujda, Jerada Province, Oriental, MoroccoLarge cluster of translucent yellow bladed wulfenite crystals over tan-co...

From Ray Mine, Mineral Creek District, Pinal County, Arizona Bright blue micro crystal coating of chrysocolla over quartz crystal Custer matrix. T...

From Tekhdi, Madhya Pradesh, IndiaLarge cluster of translucent yellow-brown fluorite botryoidal crystals. The fluorite intersected the opposite cav...

From Rio Grande do Sul, Brazil Aesthetic formation of lustrous transparent purple amethyst quartz crystals in fan-shaped aggregate. These formation...

 from Elmwood Mine, Carthage, Smith County, Tennessee Transparent 3d cubic formation of bi colored purple fluorite with gem yellow core. Bright vib...

From Kolwezi, Katanga, Democratic Republic of the Congo (Zaire) Large polished free form botryoidal specimen of solid chrysocolla and malachite bu...

From Edong Mining District, Daye, Hubei, China Cluster of sharp scalenohedral calcite crystals partially covered with lustrous iridescent metallic ...

From Guatomo Mine, near Tham Thalu, south of Hat Yai, Yala Province, Thailand Well defined undamaged specimen of olive yellow-green ball aggregates...

From Edong Mining District, Daye, Hubei, China Cluster of sharp scalenohedral calcite crystals partially covered with lustrous iridescent metallic ...

From near Pantai Manakarra, Mamuju, Sulawesi, Indonesia Double-sided cluster of translucent grape purple quartz agate in spherical formations with ...

60-pound fossil plate, with three stunning, fossilized Diplomytus fish in their natural matrix. Towards the right side of this piece, there is a be...

from Jalgaon,  Maharashtra, India   Large specimen of lustrous green apophyllite crystals in isolated clusters on druzy chalcedony matrix. The apop...

From Tsumeb Mine, Otavi-Bergland District, Oshikoto, Namibia Scintillating formation of spherical aggregates of quartz with translucent green conic...

From Wagholi Quarry, Maharashtra, India Vibrant royal blue cavansite crystals in spherical aggregates on quartz microcrystal-coated matrix with sma...

Large 2.5 inch metallic lustrous cubic Spanish Pyrite crystal on matrix. This specimen has sharp, well-defined terminations where the crystal faces...

From Mibladen, Atlas Mountains, Khénifra Province, Morocco  Here is an exceptional world class specimen of a cluster of hexagonal crystals of dark ...

From Quincy Mine, Hancock, Keweenaw Peninsula Copper District, Houghton County, MichiganLustrous translucent parallel scalenohedral calcite crystal...

From Agrigento, Sicily, Italy   Massive specimen of scintillating white aragonite covered with a cluster of gem translucent blocky bright yellow su...

From Milpillas Mine, Cuitaca, Sonora, MexicoLustrous transparent dark-royal blue Azurite crystals on contrasting matrix of white clay. Large pseudo...