huge set of Cambridge emeralds came from her, and she was the inspiration for the Cambridge Lover's Knot Tiara.
|Augusta, Duchess of Cambridge|
|Queen Mary (right, with Prince Charles)|
This post is part of a series on the brooches of Queen Elizabeth II. Click here to see what we've covered so far.
Photos: Leslie Field/Anwar Hussein/Suzy Menkes/Caras/Zimbio/Getty Images