Buying Guide

Before diamonds ruled, colour ruled. Three gems have been prized above almost all others for millennia — and two of them are, astonishingly, the very same mineral.

A diamond certificate is the single most useful piece of paper in the whole purchase. It’s an independent, objective description of exactly what you’re buying — and once you know how to read it, you’ll never feel lost in a jewelry store again. What a certificate actually is A diamond certificate (also called a grading…