Polished Noreena Jasper slab. NJ440 Polished rock. Dimensions approximately 115 mm x

Dimensions approximately 115 mm x 70 mm x 11 mm thick

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

Dimensions at widest points approximately 130 mm x 100 mm x 7 mm thick

Weighs 480 grams

Dimensions at widest points approximately 120 mm high x 100 mm  x 55 mm thick

Polished Noreena Jasper slab. NJ440 Polished rock. Dimensions approximately 115 mm xNJ440 Noreena Jasper slab, polished on one side. Dimensions at widest points approx. 115 mm x 80 mm x 11 mm thick & weighs 218 grams. From our mining claim north of Newman in the Pilbara region of Western Australia.