Asscher Cut Lab-Grown Diamond Solitaire Engagement Rings in 18K White Gold Under £5,000

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 Asscher cut is a square step-cut diamond with deeply cropped corners that create an almost octagonal outline. Its concentric square facets draw the eye deep into the stone, producing a mesmerising windmill pattern. Invented in 1902 by the Asscher Brothers, it remains one of the most distinctive and collectible diamond shapes.