Natural Pyritized druzy Ammonite Fossil from Mikhaylovskiy Quarry , Ryazan , Middle Volga Rare natural Crystallized Pyrite filled chambers polished Age : 100 mil. years old Size : 52 42 13 mm Perfect for the mineral collector, jewellery, enthusiast or metaphysical healer Natural Iridescent Pyritized Druzy Ammonite From Volga, 52 Mm