Polished Pilbara Agate PA283 dendritic opal All reasonably uniform in size

All reasonably uniform in size (roughly 20 - 30 mm diameter} A bulk assortment

150 mm x 115 mm x 9

130 mm x 80 mm  x 12 mm

170 mm x 85 mm  x 9 mm

Weight 522 grams

Polished Pilbara Agate PA283 dendritic opal All reasonably uniform in sizePA283 Pilbara Agate , cut and polished on one side with a rough, natural back. Dimensions at widest points are approximately 110 mm x 60 mm x 60 mm. thick. Weighs 629 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.