Marquise Natural Diamond Side Stone Engagement Rings in 18K Yellow Gold Under £4,500

Natural diamonds are formed 150–200km below the Earth's surface under extreme heat and pressure over 1–3 billion years. Each natural diamond is unique — a one-of-a-kind creation of nature. For those who value rarity, tradition, and the knowledge that their diamond is a geological marvel billions of years in the making, a natural diamond is the ultimate choice.

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.