07311 - Extremely Beautiful 3.79 Inch Brazilian Agate Slice (Chalcedony Geode Section) Onchopristis Teeth The chondrules have olivine (Ol)

The chondrules have olivine (Ol)

35 Inch = 9

Magnificent tooth of the Hadrosaurid dinosaur Brachylophosaurus

Impressive and huge vertebra of this shark species

07311 - Extremely Beautiful 3.79 Inch Brazilian Agate Slice (Chalcedony Geode Section) Onchopristis Teeth The chondrules have olivine (Ol)Agate 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