Argyle Australian Champagne Diamond — 0.49ct Oval Cut| C6 - Dark Champagne

Why we chose this stone

At C6, colour tips solidly into cognac territory — dark, warm, and unmistakable — and this 0.49ct oval cut carries that depth well despite sitting just under half a carat. The oval's elongated shape and brilliant-style faceting keep the tone in constant movement, breaking it into flashes of deep amber and warmer glints rather than one flat wash of colour, so the stone reads as lively even at this size. Darker grades like C6 were always the rarer outcome from Argyle's rough, and finding that depth of colour in a smaller, well-cut oval like this one is more the exception than the rule. It comes from the East Kimberley region of Western Australia, mined before the Argyle pipe's closure ended production of this colour range for good.

At just under half a carat, this is a practical size for anyone wanting genuinely dark, saturated colour without the scale of a larger centre stone — ideal as a striking accent, a pair, or a smaller ring where bold tone matters more than carat weight. With the mine now closed, deep-toned ovals like this one are only becoming harder to source.