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Here is a superb specimen of magnesite from Brazil which features rhombohedral crystals in an almost..
This fine enhydro quartz crystal has 3 liquid-filled pockets, each with air bubbles that move in the..
The Tantara Mine is one of several localities that is known for its richly colored deep green diopta..
Here is a lovely freeform sculptural specimen of polished labradorite with brilliant flashes of neon..
Here are a couple of fossilized shells which have been pyritized; that is, they have been turn..
The neon electric blue color of this specimen of aqua aura quartz is even more impressive in person ..
The dendritic markings on this thin slab of limestone look like a fossil of a delicately branching s..
It's rare that you can fold up a mineral specimen, but palygorskite is flexible enough that it folds..
Here is a meteorite that was part of the meteorite that was witnessed falling in 1516 in what is now..
The intensity of the rainbow colors In this polished fluorite crystal are amazing. Starting at one e..
Here is a fine piece of sharp, translucent obsidian from California, featuring very shiny midn..
Here is a fine specimen of striated reddish brown rutile crystals and silverigray ilmenite set in gr..
The tektites in this flat are from the area in China which is strewn with these meteorite-related pi..
Arkanite is potassium sulfate, K2SO4. Here are 10 lab-grown crystal specimens that are translu..
This is a flat of 10 pieces of snow-white artinite from one of its best-known localities in Californ..
Here are 10 specimens of danburite featuring gem-tipped, sharply terminated crystals in a see-throug..
There are several groups of crystals on this specimen of proustite from the Bou Azer district in Mor..
Shrapnel from the explosion of the Sikhote Alin meteorite was recovered after the witnessed fall in ..
Splash copper is an artistic piece made using native copper from Michigan. The first step is to melt..
Zincite crystals like this are scarce, and I was happy to find it. The crystal is transparent and ge..
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