Not positive what this base semi-precious stone is from China. Our best guess is the base stone is howlite since it is so often dyed. It is unclear if these beads are just dyed in these neat patterns, dipped in colors &/or a combination of the two. Either way this is a very fun bead at a great cost to you. Price is for 1 strand randomly selected - patterns & shades will vary from strand-to-strand. The bead holes average a minimum of ~0.60mm. The photos are enlarged to show detail.