Stunning Bright Australian Opal Doublet. The opal was mined at Lightning Ridge. Bright multicolours with lots of reds. Measure : 12 x 6 x 3 mm. Receive actual doublet in photo.All items posted via Registered International Post. The item "Australian Lightning Ridge Opal Doublet 12x6mm (2501)" is in sale since Friday, March 29, 2019. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Doublets". The seller is "opalwholesalers" and is located in Kensington Gardens, SA. This item can be shipped worldwide.