Check the listing for details. 128G Rare!! iridescent Native Copper crystal mineral specimen. Condition: New. Listed at 82.50 USD. Weight(Approx): 128g (1LB=453.59g). Material: Natural Crystal. All the pictures are taken in normal sunlight. And we will do our best to solve the problem and give you a satisfying answer. Size(Approx): 95 65 11mm (1inc=25.4mm).