This item is in the category Jewelry & Watches\Loose Diamonds & Gemstones\Loose Gemstones\Opal\Boulder Opals. We go the extra mile to offer top quality opals in all price ranges. Electric gem colors 14ct natural australian solid matrix boulder opal video the colors rate 5 on the scale of 5 for brightness and flash and streak superbly across the face with rotation of the opal.