Preowned, shows minor wear to setting, stone shows no wear. Bought at a boutique several years ago. Unique deep blue color with flashes of medium and lighter blue tones. I was told that it was a ‘Cosmic Blue’ Topaz, which is a treated type of natural quartz stone. Checkerboard rectangle cut with substantial open back sterling setting. Stamped Starborn 925 inside the band. Please note that this ring is a Size 6 but fits tighter because of the thick band setting.