Annealing Gemstones & Minerals

The following is a list of Annealing 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)