This wonderful sterling silver cultured opal butterfly brooch is so lovely.The Opal is a kaleidoscope of rainbow colours - shimmering and changing colours with the light.The Opal radiates a myriad of colours - blues, pinks, greens, turquoise and an inner orange.This lovely brooch is in very good condition and look superb when worn.It weighs 9.6 grams.The dimensions of the brooch are 30mm across and 25mm down - that's just under 1 1/4 inches by approximately just under an inch.