Azurite Sun AZ134 petrified wood Dimensions at widest points approximately

Dimensions at widest points approximately 90 mm x 65 mm x 50 mm thick

Dimensions at widest points approximately 115 mm x 55 mm x 30 mm thick

POT131  Tumble polished Pink Opal from Mooka Creek

46 mm x 41 mm x 6 mm thick dome

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

Azurite Sun AZ134 petrified wood Dimensions at widest points approximatelyAZ134 Azurite sun mineral specimen. Dimensions at widest points for entire specimen approx. 100 mm x 100 mm x 35 mm thick. Weight is 446 grams. The matrix that this copper based mineral forms on is kaolinite. From Malbunka copper mine in Northern Territory, Australia.