The following is a list of Octahedron gems and minerals listed in our database. Click the pictures to get full data, click the X to remove the gem from the list.
Diamond: In fact Diamond is the only gem material comprised of a single chemical element: pure carbon, like graphite. But the atoms in diamond have been forced into a compact, three-dimensional structure by the high pressures in the upper mantle, where it is formed. Thus diamond is much harder and has a higher specific gravity (3.52) than graphite . There is nothing comparable to it in hardness; it is ther (read full)
Fluorite: Fluorite is a widely-distributed mineral in the Halide classification, and is now mined in vast quantities. It is a suitable mineral for collectors and is rarely cut as a gem, but massive varieties are carved as ornamental objects. It appears in cubes, octahedrons, dodecahedrons, while other forms are rarer. Compact, banded, and concretionary masses are frequently found. Most fine crystals of flu (read full)
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Aventurine is a quartz mineral that is most often used to crave ornate animal or spiritual figures. Aventurescence is a term used to de
Azurite is a gorgeous stone that when polished into a sphere may look very much like the planet earth. It's blues, and greens look like
Lazulite is a compact, pleochroitic mineral which forms a series to scorzalite. It is dichroic, with a monoclinic crystal system.
It 
Smoky or Brown Quartz is a commonly occurring quartz mineral that gets it's name from the smoky or cloudy interior.
A well polished pi