0.50 Carat Neon Brazillian Paraiba Tourmaline, rare and exceedingly valuble. Vivid Brazilian Paraiba Tourmaline is considered one of the rarest most expensive materials in the world, with stones over 1 carat so rare they start between $20,000 and $30,000 per carat. Production from the Brazilian mines is sporadic, and the supply has not kept up with demand for years. This particular rare stone weighs half a carat exactly, measures 5.5 x 4.8 x 3.0mm, and is untreated. Would make an amazing piece of jewelry or a rare addition to any collection. When making an offer, please keep in mind that as a Brazillian Paraiba, this stone is more valuble than even the larger, certified Mozambique Paraibas I have listed. It is already extremely low priced, well below value to sell faster. Thanks for shopping! Tags: Levian Effy Luxury Pariba Tourmaline