Natural Crystal opal rough Contraluz - (the contraluz effect occurs when the light is inserted inside or laterally) pieces with contraluz effect are rare. Ethiopian Welo Untreated! Multicolors 1 piece ( 25 x 23 x 14 mm ) about 7.2 grams - 36 cts the pieces for sale is what you see in photos! Lamp light condition! beautiful colors also sunlight! Wet Piece - Photo wet piece Keep moist please be careful with the description and measures Standard shipping ( 2-7 days for Italy ) ( 10-20 days for Europe ) ( 15-45 days for rest of the world )