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Sillimanite is an unusual alumino-silicate mineral that is uncommon on the mineral market. This spec..
Sometimes the chemical soup in the Pernatty Lagoon in Australia is just right for the formation of s..
Here is a very sharp twinned staurolite fairy cross in a dark red-brown color. The crystal is a 90 d..
From an old collection, here is a pair of sharp, twinned rutile crystals on matrix. The intersecting..
Although Merelani is best known for tanzanite, it also produces fine crystals of several other varie..
This gemmy-clear, double terminated quartz crystal features two purple phantoms, one at each end, wi..
The unusual name "Heart of the Universe" has been given to the unusual rose quartz crystals from thi..
Here is a very good crystal of the rare gemstone, tsavorite garnet. The color is an attractive satur..
You will be amazed by the rich, saturated, crimson red color of this fine example of arkanite. ..
Here is a stunning specimen featuring 2 pyrite cubes perched on a chunk of marl matrix. The cubic py..
On this selenite specimen the radiating clusters of fine needle crystals are actually clear, but app..
Here is a beautiful and aesthetic cluster of half a dozen malachite stalactites which formed on the ..
Here is a dramatic specimen that features shiny black obsidian with an air-bubble hole that is lined..
The magnetite crystal on this specimen is a well-formed 1.4" octahedron that is embedded in a high c..
Here is a crystal of brilliantly metallic molybdenite, from Wolfram Camp, which is arguably the worl..
This is a beautiful peridot crystal in a very gemmy grass green color. The crystal is well-shaped fo..
Here is a rainbow aura quartz that is one of the flashiest and most brilliant members of the aura qu..
Here is a doubly-terminated quartz crystal with a moveable air bubble suspended in liquid water that..
Here is an amazing specimen featuring 2 highly geometrical, interlocking twinned pyrite cubes. Amazi..
Here is a very nicely preserved section of a petrified tree trunk, the fossilized remainder of a tre..
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