RANKED: The 7 most expensive watches worn by the British royal family

Prince Charles likes to wear a Parmigiani Fleurier. Owen Humphreys / WPA Pool / Getty Images

The British royal family is worth somewhere between $US500 million and $US600 million. They are by no means the richest royal family in the world, but half a billion dollars is nothing to be sniffed at.

Given their worth, one would expect the wrists of Britain’s monarchy to be glinting with the finest Swiss timepieces available, common accessories among the rich and famous. However, that’s not necessarily the case.

It’s surprisingly rare to see a royal sporting a watch at all these days – let alone one with a huge price tag – and it’s even less common for those in direct line to the throne.

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This might be because royals don’t want to be seen checking the time at an event, because they know the tabloids would have a field day commenting on how bored they looked.

Or, it might be because the royal family is playing down its opulence at a time when many Brits are bemoaning them as an outdated institution and a waste of taxpayers’ money.

That being said, when the royals do step out wearing a timepiece, it’s usually a very elegant choice.

INSIDER spoke to the experts at Crown & Calibre to determine the make and models of seven timepieces worn by key members of the royal family.

Scroll down to see them ranked in ascending order by the price of a preowned model.

Prince Harry, Breitling Aerospace Avantage — $US2,200

Prince Harry at the Invictus Games in 2014 in London. Ben Hoskins / Getty Images for Invictus

Pricing source: Crown & Calibre.

Prince Harry has a number of expensive watches in his collection, including a more valuable Rolex Explorer II, but he hasn’t been spotted wearing either of them out and about in a number of years.

Prince William, Omega Seamaster 300M — $US3,100

Prince William’s Omega holds great sentimental value. Eamonn M. McCormack / Getty Images

Pricing source: Crown & Calibre.

Prince William’s Omega Seamaster holds great sentimental value to the royal – it was reportedly a gift given to him by his late mother, Princess Diana.

Meghan Markle, Cartier Tank Française — $US3,300

Meghan Markle fundraising in 2013, before she became a royal. Mike McGregor / Getty Images for Cantor Fitzgerald

Pricing source: Crown & Calibre.

Meghan Markle is seldom seen with a watch on since becoming a member of the royal family.

Back when she was just a celebrity, she was often spotted wearing a Cartier Tank Française.

Princess Beatrice, Rolex Air King — $US4,200

Princess Beatrice attending the Chelsea Flower Show in 2016. Heathcliff O’Malley / WP Pool / Getty Images

Pricing source: Crown & Calibre.

Princess Beatrice went watchless to her the royal wedding of her sister, Princess Eugenie, earlier this year.

However, she’s often seen sporting her Rolex Air King in stainless steel to fashion shows and high-profile events.

Kate Middleton, Cartier Ballon Bleu — $US5,500

Kate Middleton is also a Cartier fan. Adrian Dennis / WPA Pool / Getty Images

Pricing source: Crown & Calibre.

Markle and Kate Middleton are both Cartier fans, it turns out.

However, Kate Middleton isn’t as afraid to sport a timepiece as the Duchess of Sussex these days – she’s often spotted wearing her Cartier Ballon Bleu to public events.

Prince Andrew, Rolex Day-Date — $US13,000

The Duke of York visiting the AkzoNobel Decorative Paints facility in Slough, England. David Parker / Getty Images

Pricing source: Crown & Calibre.

According to Crown & Calibre, the Duke of York has been sporting his Rolex Day-Date for about 25 years – so it’s safe to say he’s a one-watch kind of guy.

Prince Charles, Parmigiani Fleurier Toric Chronograph — £12,200 ($US15,500)

Charles sports a Parmigiani Fleurier. Owen Humphreys / WPA Pool / Getty Images

Pricing source: Chrono24.

One of the more niche Swiss watch houses, Parmigiani Fleurier is the Prince of Wales’ brand of choice. His chronograph is often tucked discreetly beneath his cuff (as above).

According to Crown & Calibre, he’s also been seen wearing Cartier and Patek Philippe watches in the past.