Peridot Chemical Formula: (Mg,Fe)2(SiO)4. Wiki User 2011-03-09 00:44:02 . The darker green Peridot color is more valuable than the yellow-green. Properties. Formula: Mg 2 SiO 4. What is the chemical formula for Peridot? 2 Magnesium OR Iron atoms to 1 Silicon, 4 Oxygen atoms. Name: The origin of the name peridot is uncertain. Asked in Vitamins and Supplements What is the chemical formula of vitamin B10? The color of the Peridot gemstone is always untreated and totally natural. A variety of Forsterite A green gem variety of Forsterite. General Olivine Information : Chemical Formula: (Mg,Fe)2SiO4 : Composition: Molecular Weight = 153.31 gm Magnesium 25.37 % Mg 42.06 % MgO Iron 14.57 % Fe 18.75 % FeO Silicon 18.32 % Si 39.19 % SiO 2 Oxygen 41.74 % O _____ _____ 100.00 % 100.00 % = TOTAL OXIDE: Empirical Formula: Mg 1.6 Fe 2+ 0.4 (SiO 4) Environment: Basic and ultra basic igneous rocks. Value. Visit gemdat.org for gemological information about Peridot. Olivine, of which peridot is a type, is a common mineral in mafic and ultramafic rocks, and it is often found in lavas and in peridotite xenoliths of the mantle, which lavas carry to the surface; but gem quality peridot occurs in only a fraction of these settings.Peridots can also be found in meteorites. Color. The color ranges between light yellow-green to dark grass-green.

Goup species name. The Peridot value ranges from $25-$500 per carat. This will be a chemical structure, not a formula. Related Questions. The Oxford English Dictionary suggests an alteration of Anglo–Norman pedoretés (classical Latin pæderot-), a kind of opal, rather than the Arabic word faridat, meaning "gem". A formula of (Mg, Fe)2 Si O4. The chemical formula of peridot is: (Mg,Fe)2SiO4. Peridot is a well-known and ancient gemstone, with jewelry pieces dating all the way back to the Pharaohs in Egypt.

The gem variety of the mineral Olivine, it makes a lovely light green to olive-green gemstone.The intensity of color depends on the amount of iron present in a Peridot's chemical structure; the more iron it contains the deeper green it will be. (From Wikipedia).