Fire agate oval cabochon/ Violet to retailer green color/ designer gemstone/ Arizona

Fire Agate is a natural gemstone found in areas of the United States (Arizona, California) and Mexico. It requires specific conditions to develop but it most commonly forms as nodules in the pockets or void spaces of volcanic rhyolite.
It is presumed that due to hydrothermal activity a mixture of molten silica and impurities penetrate and infiltrate the rhyolite in areas of sufficient space. With correct temperature and pressure conditions the unique layering of silica and impurities (goethite and limonite) form layers and botryoidal textures (very rarely with good color.) Fire Agate usually forms with a milky or clear chalcedony cap with the actual Fire Agate safely preserved underneath due to the settling of the molten liquid.
This listing is for an oval cabochon of fire agate. The dimensions of the stone retailer are 13 mm x 18 mm x 4 mm deep the weight of this gemstone is 9.5 carats. This gemstone is well-made and has several shades of green and violet. Would make a nice ring stone.