A three-carat Lucida-cut ring from Tiffany & Co ... When she's wearing her engagement ring from Phil Bronstein, a three-stone, three-and-a-half-carat emerald-cut style from Louis Glick.

Within half ... ring, featuring a 1.5-carat round brilliant cut diamond in a bezel setting. The diamond is possibly VVS1 clarity, making the ring worth an estimated £8,000," said engagement ...

Luxury jeweler Tiffany & Co ... diamonds of six different carat sizes. Users can zoom in to a ring to view details more closely and also pair the rings with wedding bands to get the full effect. Here ...