Polished Pilbara Agate PA284 rock blocks 50 mm x 35 mm

50 mm x 35 mm  x 25 mm

Weighs:  221 grams

Dimensions at widest points approximately 140 mm  x 75 mm x 60 mm thick

Dimensions approximately 130 mm x 70 mm x 12 mm thick

The environment they grew in was most probably a sandy tidal flat or braided river channel

Polished Pilbara Agate PA284 rock blocks 50 mm x 35 mmPA284 Pilbara Agate , cut and polished on one side with a rough, natural back. Dimensions at widest points are approximately 120 mm x 70 mm x 45 mm. thick. Weighs 617 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.