Ross-Simons is the authority on luxury classics. This frilly ring boasts a 10.00 carat oval London blue topaz set in swirling 14kt rose gold openwork. White and treated blue diamonds accent the sides. Ross-Simons blue diamonds are natural diamonds that have been treated which causes the color change and then heated to hold the color. The color change process is permanent. London blue topaz ring. Each Ross-Simons item arrives in a fine jewelry presentation box. Shop Ross-Simons jewelry risk-free as all items include a 30-day, 100% money-back guarantee.