Polished Pilbara Agate PA281 beryl BJ137 Polished "Black Jade" A

BJ137 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

95 mm x 70 mm x 65 mm

PC112 Chalcedony slab

240 mm x 105 mm x 10 mm thick

Weighs 638 grams

Polished Pilbara Agate PA281 beryl BJ137 Polished "Black Jade" APA281 A matching pair of polished Pilbara Agate halves with natural rough backs. (A single agate cut in half). Dimensions at widest points of each half approx. 70 75 mm x 45 mm x 30 35 mm thick. Weight of both is 322 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