Clam Shell Opal - 34.18ct - Hand Select Gem Rough

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A rare opalized fossil clamshell from Australia A rare opalized fossil clam from Australia that formed during the cretaceous period (about 100 million years ago.) A bit banged up d uring its long life, but there is blue/green fire. Great collector's piece! Shown on 1/4" graph paper. Family : Opal Variety : Clam Shell Origin : Coober Pedy, South Australia Size : 30 x 18 x 14 Treatment : none known Total Carats : 34.18 Clarity : % Show more