Aquamarine ring – £80,000

After her divorce from Prince Charles in 1996, Diana was spotted wearing a brand new pale blue sparkling ring on a few occasions.

Mr Tannahill explained: “A notable piece inherited by Prince Harry, and first worn publicly by Meghan, The Duchess of Sussex, to their evening wedding celebrations, is the Princess’s stunning aquamarine ring.

“Created by Asprey’s for the Princess, it was allegedly commissioned to replace her engagement ring following her separation from Prince Charles, and fashioned from a 13-carat aquamarine stone that was a gift from her friend Lucia Flecha de Lima.

“This ring is worth in the region of £80,000, but again, given its history, would be anticipated to fetch in excess of this price at auction with a huge amount of interest from collectors of such historical pieces.”