Coolidge is a stunning example of the crisp and geometric designs popular during the Art Deco period (circa 1930). The authentically vintage platinum ring centers a channel-set French Cut sapphire gauged at 1.02ct accompanied with a Guild Laboratories certificate stating the sapphire is Ceylon origin with no evidence of heat treatment. Coolidge is further flanked on either side by four channel set Square Step Cut diamonds totaling approximately 0.40ct in weight. The ring is finished with a slightly tapering platinum shank and is currently a size 6 and can be sized to fit most ring sizes. Please contact our concierge with sizing questions.