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Here is a japan-law twin quartz crystal from the type locality on Naru Island in Japan. The crystal ..
This is a really amazing piece: a polished pyrite egg with openings (called vugs) that are completel..
Here is a crystal of dumortierite quartz, consisting of a terminated quartz crystal with acicular ra..
This specimen of Okaruso fluorite has sharp, gem-quality, transparent crystals in a rich green color..
This is an exceptional example of a very rare form of quartz: a growth interference crystal. The cry..
This is a richly colored specimen of chromium-bearing fuchsite, the green variety of muscovite. The ..
Here is a fine specimen of childrenite from Brazil, featuring razor-sharp crystals in slightly radia..
Dal'negorsk is famous for producing sharp cubic crystals of water-clear gem fluorite. This one..
Here is a fine specimen of sandstone from the Navajo formation. The piece has been carved into a hig..
This is a large plate of fossil orthoceras from Morocco that's over 500 million years old. Orthocera..
This is a lovely and very eye-catching terminated, pale minty green crystal of hiddenite, the green ..
This is a beautiful specimen of native copper which has been shaped by melting it, then pouring the ..
The pristine clarity of this quartz crystal is truly astonishing, as there are no inclusions, veils ..
This fine ruby crystal comes from the famed diggings in Mysore, India. The hexagonal crystal is term..
This is a fine specimen of octahedral fluorite from the famous DeAn mine in China. The crystals are ..
This is a group of 3 sixling twin crystals of aragonite from Spain. All the crystals are double-term..
The color of this cobaltoan calcite specimen is a riveting magenta pink that is really eye catching...
The brilliant red color of this single crocoite crystal from the Red Lead Mine is truly stunning, an..
Here is a colorful specimen of blue-green fluorite from the famous Rogerley Mine in England. It feat..
The royal blue color of the linarite on this specimen is very eye catching, and the blue really "pop..
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