Natural Magnesite Beads Strands, Dyed, Rondelle, Size: about 10mm in diameter, 5~5.5mm thick, hole: 1mm; about 68pcs/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.