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Here is a large 78.4 gram specimen of petrified copal amber which comes from the world-famous amber ..
Here is a great specimen of dioptase from the Congo, featuring sharp crystals and a mirror-bright fl..
Phenakite crystals are rare and always popular with collectors, and this one is an excellent example..
Here is a very colorful specimen of sharply formed candy red raspberry garnet crystals from Las Cruc..
Here is a specimen of dioptase that is features many sharp, well-formed gemmy prismatic crystals to ..
Here is a superb specimen, one of the amazing new azurite suns from Australia. This piece features 1..
The dark blue color of this azurite specimen is typical of the world-class azurite specimens that ca..
Here is a spectacular group of aqua aura quartz crystals, in a size and quality rarely available on ..
This diopside specimen from Quebec's Orford Nickel Mine displays a fine stand of half inch wide pale..
This is a very dramatic specimen of green selenite from Poland, featuring sharp gemmy crystals. The ..
The metallic silvery gray color (with just a hint of red) of this tight group of cuprite crystals is..
This specimen features a pocket lined with bright turquoise blue chrysocolla that is partially fille..
At Mount Malosa in Malawi , aegerine often forms in elongated slender crystals like these. The pair ..
Here is a specimen with flattened multiple discs of azurite that formed between layers of a white ka..
Royal aura quartz is in the same family as aqua aura quartz. It is created by infusing quartz crysta..
Here is a wonderful specimen of selenite which is completely made up of orange bladed crystals of se..
The radiating clusters of needle crystals on this specimen are actually transparent and nearly color..
Here is a very nicely preserved section of a petrified tree trunk, the fossilized remainder of a tre..
This is an outstanding specimen of clear to snow white scolecite, with a host of terminated crystals..
Here is a fine specimen of stalactitic malachite, composed of 2 connected stalactites. The entire fo..
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