The British Family Royal Tiaras
Queen Mary’s Fringe Tiara
First up is Queen Mary's Fringe Tiara, which was lent to the young Elizabeth by her grandmother, Queen Mary of Teck, on her wedding day. Before that, Queen Mary had it made from a diamond necklace given to her on her wedding day by Queen Victoria.
Famously, this tiara snapped on Elizabeth and Philip's big day (pictured). Thankfully, royal perks meant it was mended by a jeweler just in time for the ceremony. The sparkling tiara features 47 bars of diamonds.
The Brazilian Aquamarine Tiara
One of the great things about being Britain's longest-living and longest-reigning monarch is that you get plenty of opportunities to wear your tiaras. Here's Queen Elizabeth wearing the Brazilian Aquamarine Tiara throughout her reign.

This tiara was commissioned by the Queen to match a diamond and aquamarine jewelry set given to her by Brazil for her 1953 coronation. After all, what's the use in aquamarine earrings and a necklace without a tiara to top the whole look off?