VIDEO LINK: https://www.youtube.com/watch?v=e_gqojtfaCs Natural Solid Black Opal Big Piece Polished, Cabochon Ethiopian, Welo Beautiful colors, Multicolor 1 Piece 11.5 x 10 x 7.5 mm about 4.50 cts - 0.90 grams Smoked Lamp light condition! The properties of Opal bring joy and a sense of happiness, increase the joy of living, stimulate artistic creativity and imagination. Standard shipping ( 2-7 days for Italy ) ( 10-20 days for Europe ) ( 15-40 days for rest of the world )