Lucy Williams Square Onyx -kaulakoru | 18 karaatin kultaverniselli/musta onyx

The 8mm onyx square is so tiny and precise, and the 45cm length with those two extra extension points means I can layer it perfectly over a crewneck. It’s been three weeks of daily wear and the gold hasn't dulled a bit, which is more than I can say for other plated pieces.

I keep reaching for this necklace since it arrived—the square onyx is such a deep, glossy black that catches the light beautifully against the gold vermeil. It sits at 41cm on me with the extension links, and the 4g weight is light enough that I forget I'm wearing it until I catch my reflection.

The square onyx pendant has such a clean, sleek look, and the 45cm chain length with the extension options lets me wear it at the perfect spot on my neckline. I love how the 18ct gold vermeil catches the light against the deep black stone.