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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.

Click to view AGTA code.

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)


Ultrasonic: Risky.
Steamer: Risky.
Heat: Fair-poor; may cause color change.
Chemicals that harm: none.


Crystal Structure
Green tourmaline crystal.
Crystal system: Hexagon, Trigonal, striated.

Brazil, Afghanistan, Myanmar, India, Kenya, Madagascar, Mozambique, Pakistan, Sri
Lanka, Tanzania, US
 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.
Brilliant cut green tourmaline.
Round cut.
Oval shape green tourmaline.
Oval shape.
Pear shape green tourmaline.
Pear shape.
Emerald cut green tourmaline.
Emerald cut.

 Heart shape green tourmaline.
Heart shape.

Step cut green tourmaline.
Step cut.

Marquise cut green tourmaline.
Marquise cut.

 Trillion cut green tourmaline.
Trillion cut.

 Straight baguette green tourmaline.
Straight baguette.

Round cabochon green tourmaline.
Round cabochon.
Oval cabochon green tourmaline.
Oval cabochon.
Square cabochon green tourmaline.
Square cabochon.

Buff top, faceted bottom.


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