Electric Greens 33ct Natural Australian Solid Koroit Boulder Opal. 29.6mm x 18.7mm x 4.8mm thick. This natural australian solid koroit boulder opal has rich gem colors which fill the veins between the stone. The colors rate 5 on the scale of 5 for brightness and include red, orange, yellow, green, amber, violet, crimson and turquoise.The colors flash and streak brilliantly with rotation of the opal and there is excellent play of color. We pride ourselves in offering you boulder opal with bright gem colours. We go the extra mile to offer top quality opals in all price ranges. The item "Electric Greens 33ct Natural Australian Solid Koroit Boulder Opal See Video" is in sale since Thursday, June 27, 2019. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Boulder Opals". The seller is "opals-downunder" and is located in Menai, NSW. This item can be shipped to North, South, or Latin America, all countries in Europe, China, Japan, Australia.