The fringe-style tiara features row after row of diamonds ... which is a halo-shaped headdress worn by Russian women." Queen Alexandra passed the tiara down to her daughter-in-law, Queen Mary ...

The fringe-style tiara features row after row of diamonds (more than 400 stones in total), and per the royal jewelry blog, is "shaped like a kokoshnik, which is a halo-shaped headdress worn by Russian ...