Lady Kitty Spencer, 29, is engaged to her South African beau worth £80m. She has distant links to the Royal Family, being the eldest child of the 9th Earl Spencer and a niece of the late Princess Diana.

However, this is not the first diamond ring Kitty has been spotted wearing on her ring finger in recent months.

In fact, it was speculated Kitty had already revealed her engagement ring at a London event.

She wore an enormous diamond ring in June 2019 on the ring finger of her left hand.

It featured a huge single diamond, which appeared to be in an old-fashion rose cut. It was set in platinum with smaller diamonds flanking the large central stone.

Royal engagement rings: How much are these jewels worth?

Queen Elizabeth II

Experts have valued Her Majesty’s 3ct ‘old cut’ diamond ring at £200,000.

The large centre stone, taken from Prince Philip’s mother’s tiara, is set in a traditional claw setting in platinum with five smaller diamonds on each shoulder.

Camilla, Duchess of Cornwall

Camilla’s ring is thought to be the most valuable among the collection. It belonged to the Queen Mother and features a five-carat emerald-cut diamond with three diamond baguettes. It has been valued at £221,500.

Sophie, Countess of Wessex

Sophie was given a heart-shaped diamond engagement ring from her royal beau, worth an estimated £105,000. The ring was made by royal jeweller Asprey and Garrard.

Sarah, Duchess of York

Known affectionately as “Fergie”, she was given a Burmese ruby ring back in 1986 by Prince Andrew.

At the time, it reportedly cost $33,000, which is around £25,225. Nowadays, this works out at $77,962 – or £59,586.

Meghan Markle engagement ring

In 2017, Prince Harry proposed to Meghan Markle.

He gave her a sparkling engagement ring – which featured one large central diamond from Botswana, and two diamonds from Princess Diana’s personal collection.

Its estimated value stands at around £260,000.