Green tourmaline, precision cut, custom cut, calibrated Green, calibrated, Green stone, Green, tourmaline, round, marquise, oval, square, apple Green, cushionWholesale Ruby Sapphire

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Green Tourmaline
Chemical Formula Ca(Li,Al)3Al6B3Si6O27(OH)3(OH,F)

Green Tourmaline comes from the Silicate family. Green Tourmaline are natural and are not subject not treatment. Major sources of Green Tourmalines are Africa, Brazil, USA and Afghanistan.

We carry Green Tourmaline in calibrated sizes in several shapes such as rounds, ovals, marquise, cushions, etc in various sizes. For more information on the sizes we usually keep in calibrated sizes, please click here.

We can also cut precision cut Green Tourmalines, this is finely cut and crafted to bring the maximum brilliancy into it. This is done with the help of automated machines and skilled labour. For your demands in precision cut, please contact us for more information.

We can accomodate pairs, layouts and single unique Green Tourmalines. Also perfected is the art of special cuts or custom cuts. This is suited to fit your specifications and can be any shape and/or cut of your choice. For your requirements, please contact us.

Crystal Habit Parallel and elongated
Crystal System Trigonal
Cleavage Indistinct
Fracture Uneven, small conchoidal, brittle
Hardness (Mohs Scale) 7-7.5
Luster Vitreous
Refractive Index nω=1.635–1.675
nε=1.610–1.650
Optical properties Double refractive, Uniaxial (-)
Birefringence -0.018 to -0.040
Pleochroism Typically moderate to strong
Streak White
Specific Gravity 3.06
Dispersion 0.017

 

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