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This specimen of drip copper is highly aesthetic and visually amazing. The color is a brilliant oran..
Here is an amazing specimen of what is called bird's nest chalcedony, because of its resemblance to ..
This Indian garnet is bright and flashy, and is colored a deep blood red color that is very robust. ..
Here is an amazing specimen of lechatelierite, the scientific name for fulgurite. It is a partially ..
This is a collection of 75 sharp fluorite octahedrons from Illinois. To make these, fluorite crystal..
This is a fine specimen of coprolite from Madagascar. It has great detail and recognizable form, and..
Splash copper is created using native copper from Michigan. The first step in the process is to melt..
Here is a fine pocket lined with sharp datolite crystals from the Roncari Quarry in East Granby, CT...
Here is a sharp single pyrite crystal that is 3.4" from tip-to-tip at the outside corners, and 2" al..
Long, pristine, doubly terminated Tibetan quartz crystals like those on this specimen are very colle..
Here is a very 3-dimenswional, scultural specimen of green quartz (called prase) from the old classi..
The gleaming colors on this specimen of chalcopyrite are intensely iridescent, featuring multiple sh..
Fine nuggets of pure native copper are occasionally found in Michigan's copper mines in the Upper Pe..
Here is a gemmy Russian fluorapatite, with great luster and superb color. It is a rich neon tu..
The gentle pastel pink color of this sharp gemmy danburite crystal is very attractive, especially as..
This is a fine specimen of opaque green emerald from the world's largest known emerald deposit, in B..
This specimen of grossular garnet features mirror-bright crystals in a beautiful chocolatey cinnamon..
Mohawkite is a blend of native copper and two other rare minerals: algodoite and domeykite. Th..
This is a large, superb specimen of chrysotile, one of the most important varieties of asbestos, fro..
Sillimanite is an unusual alumino-silicate mineral that is uncommon on the mineral market. This spec..
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