Gorgeous Sweet Neon Blue and Green Gorgeous Fire play Natural loose Australian Solid BLACK OPAL, from Lightning Ridge. 15.78 carat, one piece, NOT A TRIPLET OR DOUBLET or any imitation, solid one piece.Please note that the pictures are from different angles, Close up, no Photoshop used. 22mm X 10.5mm X 6.3mm thick. All tested by jewelers and gemologist for it's Authenticity. The item "Loose natural Blue & Green Color Play Solid Australian Black OPAL 15.78ct" is in sale since Saturday, January 16, 2016. This item is in the category "Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Other Opals". The seller is "aristocarat" and is located in La Crescenta, California. This item can be shipped worldwide.