Polished fossil stromatolite slab. Asperia digitata YD118 John Citron chrysoprase XL117 Quartz crystal from the

XL117  Quartz crystal from the southern Pilbara

140 mm x 100 mm x 5 mm thick

Dimensions at widest points approximately 150 mm x 80 mm and 25 mm thick

Dimensions at widest points approximately 50 mm x 40 mm x 34 mm thick

POP201 Pink Opal slab

Polished fossil stromatolite slab. Asperia digitata YD118 John Citron chrysoprase XL117 Quartz crystal from theYD118. Fossil stromatolite slab polished on one side. Asperia digitata (formerly Yelma digitata) from the Proterozoic "Yelma Formation". Age is approx. 1. 7 billion years. From near Wiluna in Western Australia. Dimensions approx. 270 mm x 170 mm x 10 mm thick. Weighs 1,245 grams.