Natural Magnesite Round Beads Strands, Dyed, TurquoiseSize: about 6mm diameter, hole: 1mm; about 64pcs/strand, 15.7 inch(40cm).â This stone is from Xinjiang, it is known in the trade as Turquoise because of its blue-green hues(dyed treated), similar to turquoise in appearance. It is actually Magnesite.