Mosasaurs are an extinct group of large marine reptiles. Mosasaur teeth come in various sizes and from various species.  This specimen is a large, ...

Two Orthoceras fossils found in a sea-bed matrix. Orthoceras ("straight horn") had a slender, elongated shell, with the middle of the body chamber...

Carcharodontosaurus (Dinosaur) tooth in a glass display box From Tegana Formation, North Africa. Cretaceous Age 65 million years Carcharodontosauru...

This specimen is a piece of Mexican Amber, also know as Mexican Mayan Amber. It is harder than most other ambers, which makes it less fragile and i...

This unique Madagascan Blue Celestite Cluster exhibits large, gem crystals of remarkable quality, featuring prism faces and sharp chisel-terminatio...

This large, museum-quality piece of freeform Bulls-eye Malachite with Blue Azurite, is hand-polished and sourced from Zaire. This collectors specim...

This large, museum-quality piece of freeform Bulls-eye Malachite with Blue Azurite, is hand-polished and sourced from Zaire. This collectors specim...

This top-quality, Lapis Lazuli sphere from Afghanistan, has been beautifully hand-polished for maximum aesthetic appeal. The solid piece of natural...

Beautiful top quality hand-polished natural Lapis Lazuli sphere from Afghanistan.  This specimen has rich, electric-royal blue color enriched with ...

Beautiful top quality hand-polished natural Lapis Lazuli sphere from Afghanistan.  This specimen has rich, electric-royal blue color enriched with ...

From West Boltsburn Mine, Rockhope District, Weardale, England Beautiful specimen of purple fluorite crystals  covered with overgrowth of siderite ...

From Shanhua Pu Mine, Xianghualing, Hunan Province, China Lustrous transparent green cubic fluorite crystals covered with colorless calcite crystal...

This beautiful, top-quality cube is made from a solid piece of lepidolite and sourced from Brazil. This piece has a beautifully soothing lilac colo...

AAA quality, polished Peach Moonstone freeform from Madagascar. Composed of potassium aluminum silicate feldspar, this variety of Moonstone has typ...

This polished Ocean Jasper Point captures a vivid cross-section of the remarkable mineral specimen found exclusively in the wilds of Madagascar. It...

This AAA grade Strawberry Quartz from Madagascar displays a range of colors from a delicate pink to a vibrant raspberry shade. Polished to smooth m...

Beautiful, top quality polished lepidolite free-form. This piece has a beautifully soothing lilac color with organic specs of vibrant tones of pur...

Beautiful, top quality polished lepidolite free-form. This piece has a beautifully soothing lilac color with organic specs of vibrant tones of pur...

Sculptural formation of sharp, distinct copper crystals from Jiujiang Co., Jiangxi Province, China. The copper looks beautiful under magnification...

Galena from Krushev Dol Mine, Madan District, Rhodope Mountains, Bulgaria Bright metallic galena crystals with mirror-like surface luster with mino...

From Xianghualing Cassiterite Mine, 32 km north of Linwu, Hunan Province, China Large, museum-quality, cubic transparent blue fluorite crystals wit...

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

From Deveti Septemvri Mine, Madan District, Rhodope Mountains, Bulgariaina Rare large specimen of crystals of arsenopyrite with quartz. The arseno...

Lustrous translucent red-brown sphalerite crystals in an elongated cluster perched on a thin slab of gray matrix coated with quartz microcrystals. ...