07316 - Extremely Beautiful 3.35 Inch Brazilian Agate Slice (Chalcedony Geode Section) Halisaurus arambourgi Impressive specimen with the natural

Impressive specimen with the natural association of 2 brittlestars of the genus Ophiura

in the coasts of Poland

Halisaurus (Squamata: Mosasauridae) from the Maastrichtian of Angola

It is a magnificent example of the Moroccan Platyscutellum

Beautiful example of this species of shark of the Hexanchidae family

07316 - Extremely Beautiful 3.35 Inch Brazilian Agate Slice (Chalcedony Geode Section) Halisaurus arambourgi Impressive specimen with the naturalAgate 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