The Four Cs, decoded.
Every diamond we set is chosen against the four traditional criteria — cut, colour, clarity, and carat — but the most important measure is the one you cannot grade: presence.
Cut
The most decisive of the four — cut governs how a diamond releases light. We favour proportions that maximise brilliance and quiet fire.
Colour
From colourless (D) to warm champagne (Z), colour is a matter of taste. Our signature settings favour the D–G range for icy transparency.
Clarity
Inclusions are nature's fingerprint. We select stones from VVS to VS clarity — eye-clean, luminous, and rich in character.
Carat
Weight, not size. A well-cut smaller diamond will often out-shine a larger one. Balance carat with cut for the greatest presence.
The fifth C — certainty.
Every Luck Xiour diamond arrives with an independent grading report from a recognised gemmological laboratory. Beyond the paper, our gemmologists inspect each stone in person — because a certificate can describe a diamond, but only the eye can love one.