When a celebrity couple gets engaged, the ring will often be magnificent—enormous, expensive, and custom-made. Given the very ...

The trillion, an existing triangle cut, represents just 5% of the global market. Some occur in nature, but to cut them involves a lot of wastage and the result often lacks brilliance.

Ayla ring by Marei, 18kt gold and black enamel, with 1.56ct marquise-cut white diamond, from $23,000. Marei. From Oscars night jewelry to April birthstones, right now, it's all about that most ...

Chopard Haute Joaillerie Collection platinum and triangle-cut diamond drop earrings (totaling 18.51 carats); price upon request, at Chopard boutiques, 800-246-7273. 12.

» Eximis ring featuring a 4.15-carat fancy yellow-brown diamond amid triangle-cut white diamonds set in 18-karat white gold, price on request, Cartier, 411 N. Rodeo Drive, ...

Her engagement ring was a thick band, with a center triangle-cut diamond and small flush-set diamonds surrounding it. The design is unique on its own and a great stacking ring.