Huge fire agate solid sterling silver size 6.5 ring

This is an absolutely gorgeous huge fire agate solid sterling silver size 6.5 ring. Fire agate is a variety of chalcedony, found in Mexico, New Mexico, California, and Arizona. Like opal, these gemstone have iridescent rainbow colors. The gemstone measures 26 x 15 millimeters. The ring weighs 8.7 grams and is stamped 925 on its shank. In unused vintage condition.