“Arcenciel”A one of a kind treasure, handcrafted using the ancient lost wax technique and cast in sterling silver. This remarkable Lightning Ridge Australian Opal shimmers with vivid flashes of blues and greens, making it an unforgettable addition to any collection. A stone this special doesnt come around often! Size 8. 5 Opal Properties Opal is said to inspire originality and boost creativity. It will get the creative juices flowing, and it will give you energy