Ethiopian Wollo Black Opals have a waxy luster on an opaque body, the beads have smooth polish on a symmetircal faceted rondelle shaped body, these Opal beads originate from the Wollo Region in Ethiopia which is the only African source for Black opal, the beads show a strong Red, Blue and Green Play of Color on the dark black bodies for exceptional fire, and these beads are well matched for quality on the strand. Beautiful Play of Color Fire!