The Peridot Mines of Ancient Egypt By Alison Withey August 3, 2013 Peridot Gem-quality forsterite olivine is called peridot by modern gemologists, although it was known as chrysolite, topaz, and topazos in the past. Peridot is one of our oldest gemstones. It has… Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to email a link to a friend (Opens in new window) Email Read more