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Tourmaline Cabs, Oval, 5 x 7 mm
- 8112153
- 5
- £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
