Owyhee Natural Blue Opal Plain Rondelles have a waxy luster, opaque transparency, very good polish, and symmetrical shape. Their color ranges from a light saturation of pale denim blue to a crisp white hue with areas of a darker denim blue hue for a very soothing group of Blue Opals of one source origin near sacred Native American Grounds. Beads measure approximately 8.5mm up to 9mm in diameter with some having a few beads measuring slightly larger.