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This slice of bull's eye malachite features deep and varied shades of green combined with a bright, ..
Here is a beautiful gem fluorite specimen with transparent, water clear, flashy cubic crystals with ..
Here is a very sculptural specimen of barite from the highly regarded Stoneham, Colorado locality. T..
This sceptered Herkimer diamond (quartz) crystal from the Treasure Mountain Diamond Mine is lustrous..
Malachite stalactites that are mined in the Congo are sometimes cut into semi-precious slices which ..
The green color on this tsavorite specimen is a rich, intensely saturated spearmint green that reall..
This sharp, tabular wulfenite crystal hails from the famous Red Cloud Mine in Arizona. The crystal i..
Here is a gorgeous cluster of 2 very sharp and undamaged interlocking cubic crystals of pyrite. Thes..
This imperial topaz crystal, which weighs 6.6 carats, has excellent color for its size, not the typi..
Here is a superb specimen of skeletal Herkimer Diamond quartz from Treasure Mountain Diamond Mine in..
This is a choice cabochon-cut specimen of star ruby (a variety of corundum) from the fabled ruby min..
Here is a razor-sharp sceptered Herkimer Diamond from Treasure Mountain in Little Falls, NY. The ste..
This is a specimen of fire agate from Mexico, set inside a chalcedony "bird's nest" formation. The r..
This is a beautiful specimen of deep dark green (nearly black) epidote crystals, which are arranged ..
This is a sharply crystallized ruby crystal from Mysore, India. The hexagonal crystal is terminated ..
This is a specimen of green fluorite that comes from a classic New England locality: the William Wis..
This specimen features moss-like dark and light green micro-crystals of mottramite arrayed in botryo..
This is a lovely cabochon-cut star ruby gemstone in a deep reddish-purple cranberry color. The domed..
This fine specimen features a sharp, nearly perfect pyrite cube perched on a chunk of marl matrix. T..
Here is a rare watermelon tourmaline crystal in matrix from the Strickland Quarry, arguably the most..
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