Gemstones
Paraíba Tourmaline
Paraíba State, Brazil — and Mozambique
About
Discovered in 1987 in a single Brazilian mine, Paraíba tourmaline carries an electric neon-blue saturation unlike any other stone. The color is caused by copper and manganese impurities — a geological accident that took 500 million years. We acquire only certified origin stones through our partner mine in Batalha, Paraíba, with a full chain-of-custody documentation.
Properties
- Hardness: 7–7.5 Mohs
- Refractive index: 1.624–1.644
- Copper-bearing — unique among tourmalines
- Neon fluorescence under UV
- Certified by GIA and Gübelin