| 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. |
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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  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. |
