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Tiaras set with pearls and diamonds are staples of the Japanese imperial jewelry collection, but today’s example — the pearl drop tiara that belongs to the Mikasa family — might be one of my favorites.

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The tiara is an example of mid-20th century construction, with a low profile and design elements that echo some of the Art Deco motifs from earlier in the century. Round pearls are suspended from elaborate diamond arches, which rest on a base of flat, ribbon-like scrolls.

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You’ll sometimes see this sparkler called “Princess Yasuko’s Pearl and Diamond Tiara,” because the first recorded wearer of the piece was Princess Yasuko of Mikasa. She is the eldest child of Prince and Princess Mikasa; her father was a younger brother of Emperor Hirohito. When she married Tadateru Konoe in December 1966, she gave up her imperial titles and her jewels, including this tiara. Above, she wears the tiara in Tokyo shortly before her marriage. She became Yasuko Konoe; the tiara went back to the imperial vaults.

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In more recent years, though, we’ve seen the tiara in public again. In 2015, Yasuko’s sister-in-law, Princess Takamado, wore the tiara in Stockholm for the wedding of Prince Carl Philip and Princess Sofia of Sweden.

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She paired the tiara with other diamond and pearl jewels, including the necklace from her wedding parure, a set of bracelets, and a gorgeous diamond bird brooch, which was situated to look as if it had gently perched on her shoulder.

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When Emperor Naruhito ascended to the Chrysanthemum Throne last week, Japan also gained a new crown princely family. The Akishino household, headed by the emperor’s brother and heir, Crown Princess Fumihito, includes a trio of jewel-wearing imperial princesses. Today, we’ve got a look at the family’s growing collection of tiaras.

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When Prince Fumihito and Kiko Kawashima married in 1990, Emperor Akihito granted them their own household and the titles of Prince and Princess Akishino. Kiko also gained her own imperial symbol, the iris setosa. Her diamond wedding parure, which includes the Akishino Tiara, incorporates iris flowers in its complicated design. For three decades, the Akishino Tiara was the only diadem that Kiko wore for gala events, including state banquets and the family’s annual New Year audience. (Learn more about the tiara here!)

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Fumihito and Kiko have two daughters, Princess Mako and Princess Kako, and a son, Prince Hisahito. Per Japanese tradition, Mako and Kako received parures of diamond jewelry when they turned twenty. Both of their parures also feature design inspiration from the iris. Princess Mako debuted her mirrored parure in October 2011. (More on the suite here!)

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The iris flower design is even more prominent in the diamond parure given to Princess Kako in December 2014. Like most imperial parures, this set includes a tiara with a coordinating necklace and brooch. (Learn more about the tiara and jewels here!)

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When Kiko became Japan’s crown princess on May 1, she debuted a second suite of jewels. The Japanese Crown Princely Wedding Parure takes its name from its apppearance on a pair of Japanese imperial brides: Michiko Shoda, who married Crown Prince Akihito in 1959, and Masako Owada, who married Crown Prince Naruhito in 1993. Kiko is the third imperial crown princess to wear the tiara and its coordinating jewels in public. (Learn much more about the parure here!)