Argyle Australian Champagne Diamond — 1.03ct Cushion Cut| C4 - Medium Champagne

Why we chose this stone

C4 is the colour most synonymous with "champagne diamond" — warm, golden, confidently in the middle of the scale — and at just over a full carat, this cushion cut gives that tone real room to make its case. The cushion's rounded corners and mixed facet pattern don't lay the colour out flat; instead they break it into small, shifting pockets of light that make the stone feel alive as it moves, rather than settling into one uniform hue. It's a combination that's always been popular for good reason — a substantial size paired with the archetypal champagne colour buyers picture first. It comes from the East Kimberley region of Western Australia, the source of every Argyle diamond mined before the pipe's closure ended that supply permanently.

At 1.03ct, this is a genuine centre-stone size, and a classic C4 grade makes it an easy fit for almost any traditional or contemporary setting. With Argyle production finished for good, a cushion cut over a carat in this particular colour range is becoming harder to source with each year that passes.