Fossil Coral 12mm Coin 8-Inch Tucson Online Week 2 This effect is known as

This effect is known as “labradorescence

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

” Aquamarine was once thought to be the treasure of mermaids

with inclusions of iron oxide

Shattuckite is a pseudomorph

Fossil Coral 12mm Coin 8-Inch Tucson Online Week 2 This effect is known asFossil 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.