Understand a stone
before you choose.

For a white diamond this is how little colour it holds — graded D (icy white) down to Z (light yellow). Looks white to the eye once set — the value sweet-spot.

Tiny natural marks inside, called inclusions. Fewer means rarer and pricier — yet most are invisible without a loupe. Minor inclusions a careful look under the loupe will find. Invisible to the naked eye.

For a standard round brilliant, cut grades how its proportions and facets return light. Cut to catch the most light — maximum sparkle. This is the C that matters most.

How mirror-smooth the facet surfaces are polished. Facets polished mirror-smooth, so light passes cleanly.

How precisely the facets line up with one another. Facets line up perfectly, so reflections stay crisp.

Try the UV button on the stage above.

Whether the stone glows under ultraviolet light. No reaction under UV light. Often the default preference.

For diamonds above 0.25 ct, we can usually obtain a GIA grading report. Coloured precious stones are supplied with an authenticity report describing the stone and any available treatment or origin information. We share the relevant report before you approve a stone.

No colour-enhancing treatment has been detected or disclosed. Untreated status should be confirmed by the stone’s laboratory or authenticity report.