Paraíba claim, Vila Guarita district, Juruena-Teles Pires mineral province, Mato Grosso, Brazil Each bead fashioned with a triangular outline, with natural colors of vivid blue, green lavender pink tourmaline in white quartz matrix, total gross weight of 1182 carats (inclusive of the clasp), completed by a large cast 18K yellow gold "nugget-form" clasp, stamped .750, length 18 1/2 in.