Natural opal rough Crystal 1 piece (31x24x11 mm) about Ethiopian Welo Untreated! Beautiful Color Multicolor flash fire 8.4 grams - 42 cts Photo with lamp light condition! beautiful colors also sunlight! Wet Piece - Photo wet piece Keep moist The properties of Opal bring joy and a sense of happiness, increase the joy of living, stimulate artistic creatività and imagination. It is believed that certain gemstones and minerals have beneficial health and spiritual properties. Catawiki cannot guarantee or be held liable for these suggested attributes which have no scientific evidence. Standard shipping ( 2-7 days for Italy ) ( 10-20 days for Europe ) ( 15-45 days for rest of the world )