Day 1 of Two-day General Auction
A highly collectable, large (30.6 carats), Black Opal cabochon from Lightning Ridge, New South Wales, Australia. Good iridescence with predominant blue and green hues throughout. This specimen originates from the Griman Creek. Formation of Cenomanian- Late Cretaceous age (approximately 100 million
years old).Dimensions: 24 x 21 x 12 mm.
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