Meghan Markle could wear a custom-designed tiara worth nearly $700,000 on her wedding day — here's how much the tiaras of other British royal brides are worth

The world debates whether
Queen Elizabeth II has one of the world's best jewel collections from which to loan Markle a tiara.
It's speculated the future
Markle could also wear a custom-designed tiara, which one expert says would cost about

Will she or won't she?

Besides the wedding dress, one of the biggest speculations regarding the wedding of Prince Harry and Meghan Markle is whether the future Her Royal Highness Princess Henry of Wales will walk down the aisle at Windsor Castle in true royal fashion — donning a dazzling tiara.

If Markle does opt for this regal look, she has plenty of diamonds and gems to choose from. Queen Elizabeth II has a famed, well stocked royal collection of tiaras — one of the best in the world.

The Queen lent the Queen Mother's Cartier Halo Tiara to Kate Middleton as a "something borrowed" for the Duchess' wedding to Prince William. If tradition dictates anything, she'll also loan a princess' ultimate treasure to her future granddaughter-in-law.

While it's not expected that Markle will wear the same tiara as the Duchess of Cambridge, rumors are circulating about what possible tiaras she could wear — such as the Strathmore Rose Tiara or Princess Diana's Spencer Tiara. The latter would be fitting considering Markle's engagement ring contains two diamond stones from Princess Diana's collection, and that she and Harry plan to honor his mother on the big day.

Then again, she and Harry are a modern-day couple — she could also have her own tiara made for her.

Whether Markle goes for an heirloom tiara or a custom tiara, there's no denying the jewels and metals that will sparkle atop her head go for a pretty penny.

We took a look at some of the most famous weddings in the British royal family and their equally famous tiaras — and just how much those tiaras might be worth.

Queen Elizabeth and Princess Anne — Queen Mary's Fringe Tiara

When Queen Elizabeth II (then Princess Elizabeth) married Philip Mountbatten, Duke of Edinburgh, in 1947, she sparkled underneath the Queen Mary's Fringe Tiara. It was gifted from Queen Mary to her daughter-in-law, Queen Elizabeth The Queen Mother, who loaned it to Elizabeth as a "something borrowed." In tune with tradition, the tiara was then loaned to Elizabeth's daughter, Princess Anne, to wear as she tied the knot to Mark Phillips.

This dazzler is actually the product of dismantled jewelry — it's comprised of 47 diamond bars using diamond stones taken from a necklace Queen Victoria gifted to Queen Mary. Jeweler Garrard & Co. set the stones in gold and silver and separated the bars with smaller diamond spikes.

There's no word on its value, but a 0.5 carat diamond averages around $1,500 while a 2-carat diamond can range from $18,000 to $21,000, depending on cut and clarity.

Princess Margaret — Poltimore Tiara

Princess Margaret departed from tradition and wore a tiara that wasn't already part of the royal collection, acquiring it shortly before her wedding to Lord Snowdon in 1960. The Poltimore Tiara, another Garrard creation, boasts cushion-shaped and old-cut diamond clusters and diamond-set scroll motifs surmounted by old-cut diamond terminals, all mounted in silver and gold.

It was auctioned for £5,500 (roughly $7,570)

Princess Diana — Spencer Tiara

When marrying Prince Charles in 1981, Princess Diana donned a tiara not from the royal treasure troves, but from her family's own aristocratic archives — the Spencer Tiara. This diamond encrusted piece shaped into tulips, stars, and scrolls belonged to her father and was worn by her mother and sisters on their wedding days.

This dazzler is made of a variety of other jewelry — the central portion was part of a wedding present to Lady Cynthia Hamilton (Diana's grandmother) when she married

There is no estimate on how much it's worth, but a similar headpiece with 800 cut diamonds and an estimated weight of 48 carats was recently sold by the Spencer family for $225,000.

Kate Middleton — Queen Mother's Cartier Halo Tiara

Even more stunning than the Duchess of Cambridge's custom Alexander McQueen gown was the Queen Mother's Cartier Halo Tiara that glittered against her veil. Featuring three bands of 739 brilliant-cut diamonds

Meghan Markle — tiara unknown

Meghan Markle has several stunning tiara options for her fairytale wedding to Prince Harry — the Strathmore Rose Tiara, the Lotus Flower Tiara, the Cartier Bandeau Tiara, or the Cambridge Lover's Knot, which features 19 arches and 38 drop-shaped pearls. It was sold at a Christie's auction in 1981 for more than

Meghan Markle could wear a custom-designed tiara worth nearly $700,000 on her wedding day — here's how much the tiaras of other British royal brides are worth

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