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  • Tourmaline Cabs, Oval, 5 x 7 mm

Tourmaline Cabs, Oval, 5 x 7 mm

  • 8112153
  • £7.00  exc.VAT

The Tourmaline group refers to a number of related species and varieties. In 1703 the Dutch imported it from Sri Lanka to Western and Central Europe where it gained its name 'Turmali' which means 'stone with mixed colours'.  

These cabochons have a smooth, polished surface.  

Shape: Oval

Size: 5x7mm

Weight: 0.15grams

Colour: Glassy pink and green

Moh's hardness: 7-7½  

Density: 2.82-3.32

Cleavage: Indistinct

Refractive index: 1.614 - 1.666

Dispersion: 0.017