This is a beautiful thumbnail size Multicoloured Tourmaline from Taquaral, Minas Gerald, Brazil
Crystal Dimensions: 1cm (0.3”) x 0.5cm (0.1”)
Perky Display Box Dimension:
3.5cm (1.3”) x 3.5cm (1.3”)
Overall Weight: 13 grams
Multicoloured Tourmalines are considered to be one of the most complicated minerals put together with mixed crystals of aluminium boron silicate.
The chemical formula for this crystal is: