Polished fossil stromatolite from Bolivia. BST106 oldest agate in the world PC125 Chalcedony rough rock

PC125  Chalcedony rough rock

cut and polished  on one side

DO202  Dendritic Opal rough rock

155 mm x 70 mm x 30 mm thick

7 mm thick and weighs 145 grams

Polished fossil stromatolite from Bolivia. BST106 oldest agate in the world PC125 Chalcedony rough rockBST106 Fossil stromatolite slab, polished on one side. This museum quality specimen has been cut at right angles to the bedding and displays the columnar structure beautifully ! From the Miraflores Formation, El Molino, Potos, Bolivia, South America. Age approx. 70 million years (Cretaceous) Dimensions at widest points approximately 320 mm x 295 mm x 10 mm Weighs 1,347 grams