Petrified Coral or Fossil Coral or Agatized Coral is created whereby coral is replaced by silica which preserves the specimen.
It’s amazing to think that what was once a fragile coral reef millions of years ago, is now very hard rock which is dug up and collected from mountains.
A vast variety of colours and patterns display the mineralization and skeletal shape of these ancient corals. Indonesian fossilized coral is considered to be the most desirable and unique.
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Agatized fossil coral can exhibit a wide range of natural colours, ranging from white and pink, to brown, grey, black, yellow and red. Coral colour may vary widely within a single stone, depending on weathering, oxidation and the original mineral content.
Fossilized Coral is quite hard and is 6.5-7 on the mohs scale.