Marquise Lab-Grown Diamond Solitaire Engagement Rings in 18K White Gold Under £4,500

A lab-grown solitaire is the purest expression of modern engagement ring design — timeless simplicity with intelligent value. The solitaire setting puts all focus on the diamond, and lab-grown savings let you choose a larger, higher-quality centre stone.

The marquise cut features a distinctive elongated shape with pointed ends, offering the largest face-up area of any diamond shape for its carat weight. Its boat-like silhouette creates a dramatic, regal presence on the finger and makes the stone appear significantly larger than other shapes of the same weight.