Polished Killaloe Opal rock KO131 Noreena Dimensions at widest points approximately

Dimensions at widest points approximately 180 mm x 110 mm x 50 mm thick

From near Wiluna in Western Australia

140 mm x 95 mm x 65 mm thick

Approximate dimensions at widest points 160 mm  x 120 mm  x 15 mm thick

Chinese Writing Stone is a porphyritic basalt (porphyry) with groups and rosettes of plagioclase feldspar

Polished Killaloe Opal rock KO131 Noreena Dimensions at widest points approximatelyKO131 Killaloe Opal rough rock, cut and polished on one side with a rough, naturally weathered back. Dimensions at widest points approximately 190 mm x 160 mm x 90 mm thick Weighs 3,301 grams Killaloe Opal occurs at a location near Norseman in the Eastern Goldfields of Western Australia.