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This specimen of purple-violet fluorite comes from the Minerva Mine #1 in Southern Illinois, which h..
The tiny little crystals on this glittering specimen of uvarovite garnet are so brightly reflective ..
Dundasite is a rare lead carbonate, and this fine example was collected from the type locality at th..
Here is an excellent specimen of black kyanite, featuring merged and stacked fans of aqua aura coate..
Bright red vanadanite covers most all of this specimen, which features cardinal red crystals to 5 mm..
This is a beautiful tabular quartz crystal, doubly terminated and complete all around. It has 2 larg..
Here is a colorful specimen of turquoise blue amazonite from Colorado. There are half a dozen crysta..
This specimen of fluorite comes from the Denton Mine in Southern Illinois, which has been closed sin..
This is a very flashy, polished nugget of mohawkite, a rare mineral composed of arsenian copper, alg..
On this specimen, hundreds of sharp, gemmy, sparkling creedite crystals are formed as spiky, radiati..
This is a very fine, large for the locality, single crystal of gem topaz from the famed Topaz Mounta..
The purple spheres of chalcedony on this fine, 2-sided floater specimen resemble bunches of grapes, ..
A few years ago, a group of collector-dealers rehabilitated a shaft at the Greenlaws Mine and have r..
The prominent white line running down the middle of this elongated, thin, double terminated crystal ..
This chalcanthite specimen was collected at the Planet Mine in late 2015 by Mike Shannon and is not ..
Green phantoms inhabit the insides of the clear gem quartz crystals to 2.1" on this fine specimen fr..
This is a very richly crystallized specimen of pyrolusite from Western Australia's Woodie Woodie Man..
Here is a well crystallized specimen of light green fluorite from the Seata mine in Yorkshire, Engla..
This is a specimen featuring sharp, terminated clear calcite crystals on chalcopyrite from the Brush..
In Michigan's copper mines, copper is often found loose in the veins, when the calcite has naturally..
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