The fun thing about costume jewellery is that it can let you look like a million bucks without spending nearly that much. This ring by Katerina Makriyianni is a good case in point. Vendor Net-A-Porter notes, “Katerina Makriyianni’s standout pieces are inspired by Crete’s unique surroundings. This gold-plated silver ‘Trillion’ ring has an open band setting tipped with a faceted green agate doublet and ruby-red crystal. We like the three miniature green onyx stones that flicker with your every movement.”

This sells for USD$355.