Natural Opal Rough Australian, Lightning Ridge Multicolor 14 Pieces from 6 to 16 mm about 23.2 cts - 4.64 grams UNTREATED! The properties of Opal bring joy and a sense of happiness, increase the joy of living, stimulate artistic creativity and imagination. Photo wet pieces! the piece for sale is what you see in photos! Lamp light condition! 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 ) if you want fast shipping, please contact me immediately after the auction win