07318 - Top Rare 3.36 Inch Brazilian Agate Slice (Chalcedony Geode Section) MakeOffer North America continued separating from

North America continued separating from the rest of Laurasia

Russell 1970

This specimen only preserves the enameled crown

systematic searching by meteorite hunters with metal detectors resulted in the discovery of a large number of meteorites

Haluza et al

07318 - Top Rare 3.36 Inch Brazilian Agate Slice (Chalcedony Geode Section) MakeOffer North America continued separating fromAgate 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