The polish is excellent and there are many colours throughout the opal with really striking black almost spider like webs or cosmos like swirls. Rich reds, pink, gold, orange, indigo violet, emerald green and vivid electric turquoise blues, just a rainbow in a opal.Dimensions are as follows - Length 23 mm x Width 15 mm x Depth 2-3 mm. Colours Present - reds, pink, gold, orange, indigo violet, green and turquoise blues. Style - Free-form opal perfect for a pendant. The item "Cool Solid Lightning Ridge Picture Stone Opal Whopping 7.7cts Electric Green Gem" is in sale since Tuesday, April 30, 2019. This item is in the category "Jewellery & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Black Opals". The seller is "tigerfinchjewellery" and is located in Chermside, QLD. This item can be shipped worldwide.