RARE PARAIBA TOURMLINE ROUGH
This is a natural untreated rough which i purchased direct from the  main miner in brazil.This material is becoming very rare and it should not be confused with treated paraiba stones africa which are lavander Tourmaline stones heated with cooper.

Weight 30.55 cts app

Size 25 x 18 x 13 mm app

Note we have cut stones in our sister store SEDAGEMS

These cupriferous tourmalines from the Mina da Batalha in the Federal Brazilian State of Paraiba are small, rare and precious. Their spirited turquoise to green colours are such as are not found in any other gemstone in the world. The exclusiveness of this legendary find makes these rare gemstones real treasures.

Normally, iron, manganese, chrome and vanadium are the elements responsible for the beautiful colouring in tourmalines. The Paraiba tourmaline is different: it owes its splendid colour to copper, an element which has never before been observed in a tourmaline. Indeed quite a fair proportion of its weight consists of copper. But scientists have discovered that it often also contains manganese.

In the Paraiba tourmaline, the interplay between these two elements gives rise to a variety of fascinatingly beautiful colours: emerald green, turquoise to sky blue, sapphire blue, indigo, bluish-violet, and purple.