Fossil Coral (Indonesia, USA) 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. AKA Agatized Coral, Agatized Fossil Coral. Metaphysical Attributes: Grounding. Mohs Hardness 6.5-7.
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