De Beers London - Lotus By De Beers 18-Karat White Gold Diamond Ring - 54

De Beers' ring is part of the label's 'Lotus' collection - look closely and you'll see the wide band is made up of the namesake flower. Made from 18-karat white gold, it's set with over 300 diamonds, each of which have undergone a rigorous selection process guided by three pillars of Fire, Life and Brilliance. The brand recommends gently washing yours with warm, soapy water and a cotton cloth to maintain its mesmerizing shine.