Australian Black Opal bracelet. Length - 19 cm weight - 2,64g Australian Black Opal is considered the most valuable and prestigious type of opal, renowned for its dark body tone (ranging from dark gray to jet black) that makes its vibrant "play-of-color" appear more intense than other opals. Primarily mined in Lightning Ridge, New South Wales, this gem is often called the "King of Opals" and is a symbol of deep, mystical energy, transformation, and ultimate protection. Item will be shipped by registered mail with tracking number.