Peridot is a transparent lime or olive green. It has a hardness of 6.5. It's green color is due to iron. Gem-quality specimens of the mineral olivine are called peridot.
As with all gems, protect peridot from scratches and sharp blows. Also avoid large temperature changes (such as leaving it be a heater vent or in a hot car). Do not clean peridot in a home ultrasonic cleaner.
Peridot is relatively soft and best used in earrings, pins and pendants, where they will not endure rough wear. Treat peridot with care to avoid chipping. Long contact with perspiration can attack the gem over time. Keep peridot away from acids, sudden temperature changes, and ultrasonic cleaning.
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