Bobbie Stasa holds a stone blade made of agatized coral. She found the prehistoric piece last summer near Yemassee in southern South Carolina.

Our state gem stone is Lithostrotionella, which is fossilized coral that is 360 million years old. The way things become agatized is through time, heat and pressure. That’s what will separate ...

In this video my friends PaleoCris, and Rick (digdivediscover) team up with me to find Agatized Coral Geodes in a river in Georgia! This trip was nostalgic for me, because I grew up about 45 ...