Pseudo-stromatolite, extra large Geode possibly another shift in growing

possibly another shift in growing conditions causing a transition from hyalite to a different type of quartz

striations

excellent clarity

Loose piece: There is a shard of smoky quartz on the underside that is loose and will move around (you may hear a faint 'tink' sound like porcelain

the piece would not lose any key features without it

Pseudo-stromatolite, extra large Geode possibly another shift in growingLocale: Morocco Approx dimensions: 5. 5 x 5 x 4" Approx weight: 6 lbs 11 oz A stromatolite is a sedimentary fossil structure made by prehistoric bacteria colonies, typically cyanobacteria. Stromatolites in fact are still living and forming in some parts of our world today, including Australia, and are among the earliest forms of lifeand fossilson our Earth. The fossils form in shallow water conditions of lakes or salt water shores. First,