By Bethan Holt A lifetime's supply of diamonds is all part of the quintessential dream of what it must be like to be a Princess. You're spoilt for choice when it comes to tiaras and could wear a different precious parure every day. Indeed, this was exactly how royals less than a century ago operated.

For example, Queen Mary (great-grandmother of King Charles) was famous for her magpie eye and vast collection of jewels. But for the Princess of Wales , the diamond dream is rather far from the reality of being a 21st-century royal, especially one who has always seemed more at ease in trainers and jeans than dazzling ballgowns (even if she does wear the latter beautifully when the occasion calls for it). READ MORE: Royal accused of trying to set fire to woman's clothes Take the latest addition to the Princess's jewellery collection, revealed on Sunday evening in a video congratulating Team GB for their Olympic successes.

Despite her hand being shown only briefly, it was obvious that she had eschewed her world-famous 12-carat diamond and sapphire engagement ring for a never seen before eternity ring. Although the images are blurred, it seems her new ring is a rather more understated model comprising of small gemstones. Some have speculated these might be sapphires to reflect her original ring or garnets, which are Kate's January birthstone.

READ MORE: King Frederik and Queen Mary announce final summer tour of 2024 It wasn't the only new (to the public) item of jewellery whic.