Polished Porphyry slab. PO 130 Rhodonite Measures approximately 220mm x 120mm

Measures approximately 220mm x 120mm and  7mm thick

Chrysoprase on one end

Dimensions at widest points approximately 90 mm x 65 mm x 60 mm thick

Dimensions approximately 140 mm x 130 mm x 100 mm thick

Dimensions at widest points approximately 150 mm x 160  mm x 10 mm thick

Polished Porphyry slab. PO 130 Rhodonite Measures approximately 220mm x 120mmPO130. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 270 mm x 150 mm x 8 mm thick. Weighs 711 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. The porphyry pictured here has pinkish coloured clinozoisite crystals set in a ground mass of dolerite. The