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 August
(Peridot)
- Yellow-green, olive green, brownish, grass green
- Moh's scale of hardness 6.5 - 7
Peridot is actually the gemstone variety of olivine, which
is composed of two different minerals: fayalite and forsterite.
The balance of these two minerals and several others contributes
to the best color for peridot jewelry. In cases where color
is not optimal, peridot may be heat-treated in order to oxidize
specific minerals and enhance color. Often faceted for peridot
jewelry, beads and cabochons are also produced. Though cat's
eye and star peridot have been discovered, they are quite rare.
Another rarity is that which comes from iron-nickel meteorites
called pallasites. Some have actually been cut and made into
peridot jewelry.
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