Among the sweetest deals on Gilt is the $5,200 price cut on the Amairah 2-carat Lab-Grown Diamond Ring in a 14K White Gold setting. This one is fully stocked in sizes 5 to 9 and comes with a gift ...

Vintage signed pieces ... colored gems that are set on rings, too, including a 1.38-carat fancy vivid purplish pink diamond (estimate: $425,000 to $560,000) and a 2.65-carat fancy intense orangy ...