Perfect matched pair, large size ( 35 x 10 x 3mm ) cut and polished, teardrop shaped, cabochons of Fossilized Palm Root Agate. Ready to be set into a fantastic one of a kind pair of earrings. This genus is known in the fossil record from the Late Cretaceous to the Miocene ( from about 84.9 to 11.6 million years ago ). Very much like Petrified Wood, organic matter that is trapped and replaced by silica, turns the original form to stone.