Engagement ring specialist, Max Stone, said: “Princess Beatrice’s ring is an absolute stunner. A six claw round diamond takes centre stage, which looks to be around three carats.

“The round diamond shoulders two tapered baguettes, which gives the ring a vintage feel and Art Deco-inspired look. For added sparkle, the ring also features small pavé diamonds halfway around the band.

“From the images, it’s clear the diamonds are VVS grade, which means they have minuscule inclusions that are difficult even for trained eyes to see under 10x magnification. The diamonds look flawless.”

“With this in mind, I would estimate the value of this ring to be around £130,000 to £140,000.