Below, we’ve broken down some of the best places to purchase star-worthy engagement rings online — from Blue Nile ‘s bestsellers to Catbird ‘s delicate designs.

As the classic campaign slogan goes, “A diamond is forever.” You’ll wear your engagement ring for the rest of your life, so ...

Princess Diana’s extravagant engagement ring, which is 12-carat Ceylon sapphire ... Eventually, she began wearing an ...

British singer FKA Twigs debuted her spectacular engagement ... ring weighs over twenty carats, features a 16.5 emerald cut stone, flanked either side by two carat gems, and was valued at $2 ...

Designed by the Prince himself, the ring features a cushion-cut diamond, estimated to be between 2.5 and 3 carats ... In recent weeks, the Princess of Wales has been forgoing her 12-carat, opal-cut ...

Princess Diana ... a Ceylon sapphire engagement ring in 1981. Today, it’s arguably her most iconic piece of jewelry. Selected from Garrard’s catalog, the 12-carat oval-cut center stone is ...