The 4 C's of Diamonds

Diamond carat refers to a stone’s weight, not just its size. Our guide explains what carat really means, how it affects appearance and value, and h...

Diamond clarity refers to the natural inclusions that make every stone unique. Here’s our guide to how clarity is graded, what it really means, and...

Diamond colour measures lack of colour, graded D to Z. Explore E.C.One’s G-colour and above diamonds, plus fancy coloured diamonds and Champagne al...

A diamond’s cut determines how it interacts with light - and how much it sparkles. From brilliance to fire and scintillation, we explain why cut is...