Owyhee Natural Blue Dendritic Opal Plain Nuggets have a waxy luster on these opaque beads, exhibit good polish with a symmetrical shape with color ranges from a light to medium slightly greyish denim blue for a very soothing group of Blue Opals of rare origin showing fabulous moss green fern-like internal features for a consistently well crafted group of matching opal beads ranging in size from 10x7x5mm up to 20x15x10mm. AAA