Polished Pilbara Agate PA290 tube agate 225 mm x 200 mm

225 mm x 200 mm x 10  mm thick

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

GRN99  Green Opal & Magnesite slab

170 mm x 70 mm  x 15

DO228  Dendritic Opal rough rock

Polished Pilbara Agate PA290 tube agate 225 mm x 200 mmPA290 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.