Polished Pilbara Agate PA290 tube agate PRT110 Tumble polished Prehnite from

PRT110  Tumble polished Prehnite from Western Australia

CO119  DeGrussa copper ore rough rock

BJ123  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Weighs 983 grams

Dimensions at widest points approximately 190 mm x 110 mm x 85 mm thick

Polished Pilbara Agate PA290 tube agate PRT110 Tumble polished Prehnite fromPA290 Pilbara Agate , cut and polished on one side with a rough, natural back. Dimensions at widest points are approximately 125 mm x 80 mm x 40 mm. thick. Weighs 823 grams. Studies have shown that these are probably the oldest agates in the world with an age in excess of 2 billion years. They occur in the Maddina Formation in the Pilbara region of Western Australia. From near Nullagine, Pilbara region, Western Australia.