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Here is an amber gemstone, a polished piece of amber that has been shaped into an oval cabochon and ..
This is an extra-large, lustrous book of iron-rich midnight black biotite mica. The biotite is forme..
You will be delighted by the flashing neon-bright turquoise-like colors of this gorgeous 44.8 carat,..
Here is a fascinating sparkling rainbow aura quartz specimen that was created by heating clear quart..
This is a delightful specimen of native bismuth, featuring a kaleidoscope of neon day-glo colors in ..
This beautifully formed specimen of barite is highly representative of the material found in the 201..
On this specimen from China there is a colorful emerald crystal sitting in smoky quartz that rests o..
This is a specimen of octahedral pyrite crystals that is bright and shiny, with smooth triangular fa..
This 292-gram specimen of pink opal comes from the Acari copper mining area near Nazca. Pink Andean ..
The sparkling crystals on this outstanding specimen of rhodonite from Peru are both eye-catching and..
Smoky quartz crystal specimens from Mont Blanc are like the Holy Grail for collectors of this wonder..
This scapolite is a well-formed, transparent, light golden yellow crystal that is transparent and re..
Here is a specimen featuring multiple barite crystals on matrix that comes from the 2016 pocket at t..
The water clear crystals on this specimen of Chinese fluorite are razor sharp, and the surfaces are ..
Here is a specimen of cyanotrichite, mined in the 1970s at the long-closed classic Grandview Mine, w..
The vibrant color of this polished chrysoprase nugget is a vivid apple green and turquoise mixture t..
Ilmenite from New England is almost unheard of, yet there is one locality that produces this titaniu..
Here is a beautiful specimen of golden pyrite (also known as fool's gold). The pyrite crystals are p..
This double terminated wand is a polished fluorite piece that was created out of phantom fluorite. I..
Sitting atop a matrix of dark black stone are some large, sharp alum crystals to 2" on this colorful..
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