09105 - Beautiful Purple Natural Amethyst Geode Minas Gerais District - Brazil Raptor Beautiful spine corresponding to the

Beautiful spine corresponding to the dorsal fin of this incredible shark that reigned the seas and the fluvial systems next to the coast during all the Mesozoic Era

Prognathodon Anceps

Great collection of 6 Platecarpus ptychodon (Mosasaur) Rooted Teeth

and the specific gravity

09105 - Beautiful Purple Natural Amethyst Geode Minas Gerais District - Brazil Raptor Beautiful spine corresponding to theAmethyst is a purple variety of quartz (SiO2) and owes its violet color to irradiation, impurities of iron and in some cases other transition metals, and the presence of other trace elements, which result in complex crystal lattice substitutions. The hardness of the mineral is the same as quartz, thus making it suitable for use in jewelry.