| Green Tourmaline Gemstone Information Information * Loose gemstones * Jewelry links Tourmaline is a birthstone for the month of October and the gemstone representing the 8th wedding anniversary. It was once believed that it protects the wearer against bad decisions, many dangers, and misfortune. It is also known to attract friends and lovers. Pink tourmaline promotes female balance and protection, as green tourmaline promotes the same among males. |
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ENHANCEMENT CODE E Click to view AGTA code. PROPERTIES Refractive Index 1.624-1.644 Hardness = 7-7.5 (Moh's Scale) Specific Gravity =3.06 Species - Tourmaline Optic Character - Double Refraction. Phenomena - Chatoyancy, color change (rare) WARNINGS FOR CARE Ultrasonic: Risky. Steamer: Risky. Heat: Fair-poor; may cause color change. Chemicals that harm: none. |
Crystal Structure  Crystal system: Hexagon, Trigonal, striated. MAJOR SOURCES Brazil, Afghanistan, Myanmar, India, Kenya, Madagascar, Mozambique, Pakistan, Sri Lanka, Tanzania, 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. |
