Natural Dark Opal Sphere Multicolor, Flash Fire Ethiopian, Welo Smoked 17.8 cts - 3.56 grams Beads from 3.5 to 6.5 mm length 18 cm about Double hook closure The properties of Opal bring joy and a sense of happiness, increase the joy of living, stimulate artistic creativity and imagination. Lamp light condition! the piece for sale is what you see in photos! please be careful with the description and measures Standard shipping ( 2-7 days for Italy ) ( 10-20 days for Europe ) ( 15-40 days for rest of the world )