20388 - Extremely Beautiful 5.19 Inch Brazilian Agate Slice (Chalcedony Geode Section) KemKem_Sawfish what makes difficult its fossilization

what makes difficult its fossilization process

as large as or slightly bigger than Tyrannosaurus and possibly slightly larger than Giganotosaurus

†Hollardops sp

Beautiful specimen in natural matrix

-First Cretaceous dermochelyid turtle from Africa

20388 - Extremely Beautiful 5.19 Inch Brazilian Agate Slice (Chalcedony Geode Section) KemKem_Sawfish what makes difficult its fossilizationAgate is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating with microgranular quartz. It is characterized by its fineness of grain and variety of color. Although agates may be found in various kinds of host rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks. This beautiful large polished agate slices comes from southern Brazil. The stone has been soaked in a