This is a beautiful thumbnail size Multicoloured Tourmaline from Taquaral, Minas Gerald, Brazil
Crystal Dimensions: 2.3 cm (0.9”) x 1.1 cm (0.43”)
Overall Weight: 5 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:
