This magnesite and uvite crystal mix is from the Pomba Pit in Serra das Egus, Brumado, Bahia, Brazil. This mine is a commercial producer of magnesite and talc however uvite and other accessory minerals, including emeralds are found there. The mine owners enforce a ban on mineral collecting that includes the miners that work there. This is a double sided piece that consists of a mix of rhombic magnesites and greenish-brown uvite tourmaline crystals. One side is predominately uvite and one is a mix of uvite with magnesite. This piece measures approximately 7/8 x 13/16 x 9/16 inches or 22 x 18 x 13 mm.