Agatized rhyolite refers to rhyolite rock, an extrusive igneous rock, that has been partially replaced by agate, a type of silica-rich gemstone.This process is known as agate formation, where silica-rich solutions seep into the rock's pores and fractures, eventually replacing the original rock material with agate.The result is a rock with a distinctive pattern, often featuring layered bands of agate within the rhyolite. This particular stone doesn't have "bands" but small translucent windows within the chalcedony.
