Copper-bearing (Paraíba-type) Tourmaline from Mozambique

deposit of Cu-bearing tourmaline, and the "neon" blue and green shown by the finest stones closely resembles the most sought-after material from Paraba (figure Mavuco actually produces a wide variety of colors, including unusual deep purple amethyst-like hues and steely violetish blues (figure Of the several hundred kilograms of tourmaline rough mined to date in the Mavuco area, about 10% show blue-to-green Paraba-like colors without heat treatment (M. Konate, pers. comm., 2007).