Queen Mary's Fringe Tiara
While it originally belonged to its namesake, the spiked tiara was handed down to Queen Mary's daughter-in-law Queen Elizabeth. When it came time for her daughter, Queen Elizabeth II, to marry, she gave the headpiece to her as her "something borrowed" item—but not without a last-minute repair from the court jeweler after the current queen accidentally snapped it.
The Napoleon Diamond Necklace
Hollywood's finest can't compare to this old school push present. As the story goes, Napoleon Bonaparte divorced his wife at the time, Empress Joséphine, because she could not produce a male heir. After marrying Archduchess Marie Louise of Austria, she gave birth to Napoleon II and became the lucky owner of this one-of-a-kind diamond necklace covered in dozens of diamonds. The piece is currently on display in the National Museum of Natural History in Washington, D.C.
Queen Mary's Diamond Riviere Necklace
There's nothing like wearing a halo of diamonds around your neck. Princess Margaret, the late sister of Queen Elizabeth II, knew what that felt like every time she sported her famous grandmother's 34 diamond Riviere necklace. It later sold for nearly $2 million.
Iran's Noor-ul-Ain Tiara
If we thought Jennifer Lopez's pink engagement ring from Ben Affleck was a showstopper, there are no words for this royal masterpiece featuring one of the largest pink diamonds in existence. Designed by Harry Winston, the Iranian tiara holds 324 pink, yellow, and white diamonds set in platinum. The centerpiece diamond weighs in at 60 carats on its own.
France's Crown of Empress Eugénie
While most of France's royal jewels were later sold, the elaborate emerald and diamond headpiece was kept and is currently housed in the Louvre. With 2,480 diamonds and 56 emeralds, it's a work of art worthy of grand display.
Princess Diana's Spencer Tiara
Valuable in both cost and sentiment, Princess Diana's sparkling floral headpiece became a standard piece in the icon's jewelry collection. She famously sported it on her wedding day and on many occasions thereafter.
Britain's Imperial State Crown
Queen Elizabeth is seen wearing the Crown Jewels of the United Kingdom, which are considered some of the most exquisite in the world. The Imperial State Crown was made for King George VI in 1936 and has 2,868 diamonds, 273 pearls, 17 sapphires, 11 emeralds, and 5 rubies set in it.
Poltimore Tiara
This tiara was worn by Princess Margaret, Countess of Snowdon on several occasions (including her wedding) and is worth somewhere between $275,000 and $370,000.
The Cullinan III and IV Brooch
This once belonged to Queen Mary in 1911, and was a pear-shaped drop of 94.4 metric carats. along with a cushion-shaped stone above of 63.6 metric carats. It was placed into Mary's crown for the coronation, then the following year the Delhi Durbar Tiara took both stones. In 1953, it was worn as a brooch throughout the Queen's reign.
The Wittelsbach-Graff Diamond
This incredible diamond was rumored to be part of a dowry for King Philip IV of Spain's teenage daughter, Margaret Teresa, in 1664. In 2008 it sold for $24.3 million to Laurence Graff.
Marie Antoinette's Necklace
This stunning necklace once belonged to Marie Antoinette, the last Queen of France (who was also daughter to Empress Theresa of Austria and Emperor Francis I). Estimated worth? $3.7 million!
Princess Diana & Kate Middleton's Ring
If the ring on Kate Middleton's finger looks familiar, that's because it used to belong to hubby Prince William's late mother, Princess Diana. The 18-carat sapphire and diamond engagement ring was chosen by Diana after she became engaged to Prince Charles in 1981. Years later, Prince William asked Kate's father for her hand in marriage before proposing to her. A polite guy who sets down some serious bling? We'd say yes, too.
The Duchess of Windsor's Panther Bracelet
This Cartier panther piece was commissioned for the Duchess of Windsor by her husband Edward and was made of onyx and diamonds. It sold for $6.2million in a recent auction, making it the most expensive bracelet ever sold.
Grace Kelly's Engagement Ring
When actress Grace Kelly became engaged to Prince Rainer II of Monaco, he presented her with this 10.5 carat emerald-cut diamond from Cartier. Now that's a jewel fit for a princess!
Princess Katharina Henckel von Donnersmarck's Tiara
This has been dubbed the most valuable emerald and diamond tiara in over 30 years by Sotheby's. The tiara is made of 11 rare Colombian emeral pear-shaped drops that weigh 500 carats in total and was sold for $12.7 million.
Empress Eugenie's Bow Brooch
Empress Eugenie's bow brooch was made in 1855 after the Spanish countess married Louis Napoleon in 1853. She was known as one of the most beautiful consorts of her time, and when this was designed it was intended to be a buckle for a diamond belt, but then she asked her jewelers to make it into a more elaborate brooch.