Shining brightly in its Platinaire® setting, and 1/5 ct.t.w. of round diamonds, this engagement ring crosses over to the extraordinary. This ring is available in size 7 only. Platinaire® is a patented blend of sterling silver and 5% platinum. More durable than silver, Platinaire® is hypoallergenic, environmentally responsible and nearly impervious to tarnish. Platinaire® rings cannot be resized after purchase.