Peridot

Peridot Gemstone Information
Information * Loose gemstones * Jewelry links

Peridot is the birthstone for the month of August and the gemstone representing the 16th wedding anniversary. It was known to be dull by day, but "glow like a coal" at night. This "glow" let prospectors spot deposits in the dark and mark them for digging the next day. Peridot was thought to help dreams become a reality, and was often given as a symbol of fame, dignity, and protection.
 

ENHANCEMENT CODE N
Click to view AGTA code.

PROPERTIES
Refractive Index 1.654-1.690
Hardness = 6.5-7 (Moh's Scale)
Specific Gravity = 3.34
Species - Peridot.
Optic Character - Double Refraction.
Phenomena - None


WARNINGS FOR CARE
Ultrasonic: Risky to use.
Steamer: Never use.
Heat: Poor; rapid heat may cause fracturing or breakage.
Chemicals that harm: Sulfuric acid, hydrochloric acid,
pickling solution.
 

Crystal Structure
Peridot crystal image.
Crystal system: Orthorhombic; short prisms, vertically striated.

MAJOR SOURCES
China, Australia, Brazil, Myanmar, Kenya,
Mexico, Sri Lanka, US
Birthstones
 January  Garnet
February Amethyst
March Aquamarine
April Diamond
May Emerald
June Pearl/Alexandrite
July Ruby
August Peridot
September Sapphire
October Opal/Tourmaline
November Topaz or Citrine
December Blue Topaz or Zircon
Common Cut Examples.
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