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Started: 8/16/2018 3:19 AM
Posted: 6/28/2019 4:34 AM
pseudomorphed into a  variety of quartz. The same process is also found in coral species. Fossil coral at one time in its life was organic living coral. But over 20 million years, it became 'agatized'  and slowly transformed into quartz, all while retaining some of its original properties. Lastly, one of the most colorful organic gems in the  world and arguably.