Fossilized Green Blue Algae Necklace , dates to 2 billion years ago, wire wrapped


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Item details

Vintage from before 1700



This is fossilized blue green algae which was dated at 2 billion years old and from "the great oxygenation event" .
This stone was dated and was purchased from a fossil event at the Philadelphia Natural History Museum of Drexel University.
It is wire wrapped with silver wire.

The Great Oxygenation Event (GOE) was the introduction of free oxygen into our atmosphere. It was caused by cyanobacteria doing photosynthesis. It took a very long time, from about three billion years ago to about one billion years ago. Photosynthesis was producing oxygen both before and after the GOE.

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