Polished Chrysoprase CH459 Rain Forest Jasper Dimensions at widest points approximately

Dimensions at widest points approximately 215 mm x 160 mm x 80 mm thick

Weight 963 grams

It weighs 145 grams

Porphyry is a general term that is used rather loosely for  igneous rocks which contain relatively large isolated crystals set in a fine-grained groundmass

Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite"

Polished Chrysoprase CH459 Rain Forest Jasper Dimensions at widest points approximatelyCH459 Chrysoprase rough rock, cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 120 mm x 75 mm x 40 mm thick . Weighs 372 grams From Yerilla, north of Kalgoorlie, Western Australia.