Purchased both the 8-9mm strand of Peruvian blue opal rounds and a strand of these 8mm Peruvian blue opal beads from this seller. Boy are they different. This strand has much more green in it, but there is some blue mixed into the beads that my computer screen didn't pick up on as well. Some lighter beads almost look like a composite bead, with various bits of color mixed in (I really like those beads). It is a nice strand of beads on the whole; Peruvian opal matrix stone is an interesting material. Thanks again! :-)