Tourmaline -

Tourmaline

Birthstone - October

Mohs scale of hardness - 7 - 7.5

Colour - Can occur in any colour.  Paraiba is accepted as being the most expensive as it exhibits a bright electric blue-green.  Watermelon tourmaline is also distinguishable as it is part-coloured pink and green

Cut - As cabochons, faceted gemstones and beads

Found - Brazil, Mozambique, Russia

Care Tip - Attracts dust so needs frequent cleaning