Polished Pilbara Agate PA291 lemon chrysoprase PU144 Purple Chalcedony rough rock

PU144  Purple Chalcedony rough rock

Weight is 446 grams

OJ191  A slab

PU145  Purple Chalcedony rough rock

Dimensions at widest points approximately 130 mm x 60 mm x 10

Polished Pilbara Agate PA291 lemon chrysoprase PU144 Purple Chalcedony rough rockPA291 Pilbara Agate , cut and polished on one side with a rough, natural back. Dimensions at widest points are approximately 150 mm x 95 mm x 70 mm. thick. Weighs 1,042 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.