Polished fossil stromatolite from Bolivia. BST105 striped Weight is 757 grams

Weight is 757 grams

170 mm x 70 mm x 60 mm thick & weighs 763 grams

PU131  Purple Chalcedony slab

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

5 mm thick at widest points

Polished fossil stromatolite from Bolivia. BST105 striped Weight is 757 gramsBST105 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 345 mm x 180 mm x 8 mm Weighs 1,065 grams