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Danburite is well known for forming in crystals like this, making beautiful crystal specimens. Here ..
Bright, glossy crystals of aqua aura quartz covers this entire specimen, which features crystals tha..
Here is a specimen of well-crystallized fibrous chrysotile asbestos, colored a delicate light greeni..
This bright, highly polished gem calcite rhombohedron is water-clear, making it easy to see it perfo..
Here is a group of terminated spirit quartz crystals that have been infused with titanium in the lab..
Here is a well crystallized specimen of petalite, a rare lithium-rich pegmatite mineral. Complete cr..
This is a matrix specimen with over a dozen phenakite crystals in a smoky quartz and magnetite matri..
The color of this peridot crystal is an exceptionally vibrant jello green that really draws the eye...
This is a specimen of the intriguing material that has been christened "bird's nest" chalcedony, bec..
There are many dozens of kyanite crystals on this specimen, and all are colored a vivid blueberry bl..
This flashy nugget is composed of mohawkite, a blend of copper and the two rare minerals algodoite a..
This gem grade, 1,2 pound specimen of lapis lazuli has been polished on all sides to a brilliant glo..
The fuzzy acicular crystals on this fine specimen of cyanotrichite are 1-2mm long, and are colored a..
This is an amazingly complex, extra-large native copper nugget from Michigan. It has been polished a..
Inside many of the crystals on this fluorite specimen from Namibia is a purple octahedral zone insid..
This is a 48 carat phenakite crystal from Izumrudnye, Russia, the type locality for this rare minera..
Here is a colorful, lab-grown specimen of pure bismuth that is incredibly beautiful. It is made up o..
This Canyon Diablo meteorite comes from an area just outside Arizona's famed Meteor Crater National ..
This fossil specimen is a complete leaf of Cedrelospermum nervosum, an extinct member of the Ulmacea..
Here is a fine specimen of chabazite in a rich pinkish-orange color, from a find in Morocco in late ..
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