Whose engagement ring is worth more: Princess Eugenie or Meghan Markle?

Princess Eugenie's new engagement ring is worth even more than you think – close to double the value of Meghan Markle's, according to experts.

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The youngest daughter of the Duke and Duchess of York announced her engagement to nightclub manager Jack Brooksbank on Monday, and treated interested parties to a view of her beautiful ring: a blush-coloured padparadscha sapphire set within a row of diamonds.

The newly engaged Princess Eugenie leaving a London venue (with said ring) on Tuesday night. (Image: Getty)

Gemologist Deborah Papas, from UK TV series Posh Pawn, told The Sun she estimates the value of the ring to be over £100,000 ($175,000).

READ MORE: British Royal Family engagement rings: the story behind Princess Eugenie's padparadscha sapphire

"Padparadscha sapphires are amongst the rarest and most valuable depending on quality and a little bit of difference in quality can mean a big difference in price," Papas said.

Princess Eugenie's ring. (Image: Getty)

She also observed that the diamonds surrounding the rosy gem (10 round, and two pear-shaped) appear to be top quality – "the whitest of white" – which only cements the value of the piece.

Markle's ring, three diamonds set in a gold band, has been estimated at £50,000 ($87,000).

The central diamond on the band is from Botswana, where the couple have spent time; its companions came directly from the collection of Prince Harry's mother, Princess Diana.

Meghan Markle's ring. (Image: Getty)

Papas acknowledged that it was impossible to calculate the value of the rings exactly without closely examining them in person – but one probably doesn't need a price tag to agree that both are suitably royal.

Meghan Markle at a public appearance in Wales on January 18, 2018. (Image: Getty)

Markle and Prince Harry confirmed their engagement in November 2018, and are set to marry in April of this year.

And both couples will attend the same church (Brooksbank and Princess Eugenie later in the year, in the English autumn): St George's Chapel at Windsor Castle.