The diamond is the starting point for every SARAH & SEBASTIAN engagement ring. Our jewellers and gemologists are passionate about carefully sourcing and selecting the most beautiful responsible stones for each engagement ring. We only work with conflict-free diamonds compliant with the Kimberley Process, and certified by the Gemological Institute of America (GIA), the world’s foremost authority on diamonds.
THE FOUR Cs
Other than shape, each diamond has unique characteristics. A diamond’s quality and overall excellence is measured against a universally recognised set of criteria known as the 4 Cs: cut, colour, clarity and carat weight. Discover our in-depth diamond guide below defining each diamond property and and its significance to the grading system.