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Azurite crystals sparkle brightly on this piece, and are colored a saturated azure navy blue. This s..
These snow-white growths of starburst aragonite look like exotic flowers, as they grow upward and ou..
Natural nuggets of copper are sometimes discovered in Michigan's copper mines in the Upper Peninsula..
Here is a spectacular lab-grown alum crystal from China, in a formation reminiscent of a cactus with..
Here is a fine fluorite octahedron from the DeAn Mine. The fluorite has been cleaved along its natur..
This specimen of sand selenite features large bladed crystals that have intersected to create a very..
"Pink Ice" rose quartz was mined in the early 2000s from the Parvati Mine in India, until the mine c..
Here is a superb specimen of graphite, which is colored a silvery gray. The surface of the spe..
Here is a chalcedony bird's nest, which is actually a geode-shaped structure made up of agate-like b..
Here is a lovely specimen of prehnite and epidote from Mali, featuring smooth, bubble-like mounds an..
This is a 67 gram polished nugget of chrysoprase from the Old Yerilla Mine in Western Australia. The..
Here is a beautiful cluster of colorful orange red tabular wulfenite crystals, in outstanding condit..
This is a colorful and intriguing specimen of muscovite, in this case called "picture mica" due to t..
Here is an extra-large native copper nugget from Michigan that has been polished all over to bring o..
The surface of this specimen is covered with tiny little crystals of uvarovite garnet measuring up t..
In the copper mines of the Upper Peninsula of Michigan, pure copper is found in nuggets, like this f..
Here is an azurite specimen from the famous Milpillas, Mexico locality, featuring extremely sharp, m..
The layers of selenite on this specimen resemble a Dagwood sandwich, with 4 stacked tiers of clear c..
Here is a massive dripping sulfur stalactite, in an interesting, sculptural shape and colored a bril..
This is an amazing specimen of pyrite, crystallized as a very sharp (and 100% natural) cubic crystal..
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