1) August birthstone 2) Beautiful stone 3) Birthstone for most Leos 4) Chrysolite 5) Cut mineral 6) Decorative stone 7) French word used in English 8) Gem related to olivine 9) Gemstone 10) Gemstone mineral 11) Green gem 12) Green gemstone 13) Jewel 14) Jewel mineral 15) Mineral jewel 16) Mineral gemstone 1) Gem 2) Jewel 
Peridot (oʊ or t) is gem-quality olivine. Olivine is a silicate mineral with formula of (Mg, Fe)2SiO4. As peridot is the magnesium-rich variety (forsterite) the formula approaches Mg2SiO4. ==Etymology== The origin of the name peridot is uncertain. The Oxford English Dictionary suggests an alteration of Anglo–Norman pedoretés (classical Latin p...
• (n.) Chrysolite.
gem-quality, transparent green olivine in the forsterite–fayalite series (q.v.). Gem-quality olivine has been valued for centuries; the deposit on ...
A gem ranging in colour from dark green to yellow-green. Peridots are usually faceted or polished and sometimes confused with emeralds and green corundums.
Per'i·dot noun [ French péridot .] (Min.) Chrysolite. 
A yellowish-green semiprecious stone, usually from the volcanic island of St. John in the Red Sea. Peridots have also been discovered in meteorites. Peridots have a hardness of 6.5 on the Mohs Scale
A gem-quality form of olivine, (Mg,Fe)2SiO4, with Mg in greater quantities than Fe.
Olivine
[n] - a pale green variety of chrysolite
noun a pale green variety of chrysolite; used as a gemstone
Peridot is a semi-precious gemstone that has a bright olive green color and although similar in appearance to an emerald it is much more common and therefore has less value.