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The flattened discs of azurite on this specimen that formed between layers of siltstone composed of ..
On this specimen the bladed kyanite crystals are colored an intense sapphire blue, in a shade that i..
This is a fine specimen - a lustrous, classic blue crystal of jeremejevite from Namibia. Jerem..
This specimen is from the 2013 season's famed Bluebird Pocket. The crystals are sharp, gemmy, and tr..
This sharply crystallized ruby crystal comes from Mysore, India. The hexagonal crystal is terminated..
The biggest rutile crystal on this specimen sits atop a piece of milky quartz matrix, which shows of..
Here is a 45.1 carat gem scapolite crystal that is a lovely golden yellow color. It is very transpar..
On this selenite specimen from Poland's Lubin Mine, the layers of selenite resemble a Dagwood sandwi..
Here is a fine erythrite specimen from the 2010 find in Morocco that sports a good vug filled with s..
This specimen features a lovely combination of a gem clear, lightly smoky quartz crystal that is ove..
On this highly colorful specimen of pruskite from Poland featuring burgundy red crystals to 2.7" tha..
Here is a diamond crystal that weighs 2.31 carats. It is made up of multiple penetrating twin cubic ..
Here Is a large, sharp single crystal of green diopside from the 2007 find at Merelani Hills. The cr..
This large Herkimer diamond (quartz) crystal from the fabled Treasure Mountain Diamond Mine (now clo..
This highly colorful dioptase specimen from Kazakhstan is a rich emerald green. The crystals are wel..
This specimen of smithsonite from Mexico features lovely blue, gray and pink colors and a bubbly hem..
Sillimanite is named for the father of American mineralogy, Benjamin Silliman, 1779-1864. It is an a..
Navajun pyrite crystals are known the world-over for their sharp, nearly perfect cubic crystal habit..
This is a classic specimen of lazurite of fine form from the classic Afghani locality. The crystals ..
The dramatic color contrast between dark, nearly black smoky quartz crystals and brilliant, tangerin..
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