15" Wide Iridescent Deshayesites Ammonite Cluster

This is a truly spectacular cluster of iridescent Deshayesites ammonites from the Volga river region of Russia. There are dozens of specimens contained within a single concretion up to about 3 1/2" across. It's a very rare to find clusters like this, particularly with the shell in this nice of condition. This specimens took countless hours of preparation work to remove the hard rock surrounding all of the ammonites.