A gift to Elizabeth Bowes-Lyon— later the Queen Mother — from her parents when she married future king George VI, the Strathmore Rose tiara was crafted in England in the late 19th century. Here, Elizabeth wore the tiara in 1926 for a royal portrait. Though the tiara hasn’t been pictured on any royals since the Queen Mother’s death in 2002, perhaps its gems have. The flowers can be removed and worn as brooches, which any of the royals may have done.