Fossil Coral 12mm Coin 8-Inch Tucson Online Week 2 with inclusions of iron oxide

with inclusions of iron oxide

glass is melted in a furnace and then combined with a coloring agent to produce the swirling inclusions of pink within the clear material

Shattuckite is a pseudomorph

Cacoxenite is the trade name for this naturally occurring blend of seven stone types

Jade has been used for tens of thousands of years

Fossil Coral 12mm Coin 8-Inch Tucson Online Week 2 with inclusions of iron oxideFossil Coral is the prehistoric fossilized remains of the invertebrate reef builders that live in tropical oceans. Silica rich waters create hardened deposits that preserve coral skeletons, resulting in fossils that are chalk white, tan, gray, and brown as well as pink, red and yellow orange.