Queen Elizabeth II's Engagement Ring

Whilst we may not see much of it, as it is usually hidden under a white glove, this is probably one of the most important and sentimental jewels The Queen owns. The ring that Prince Philip of Greece and Denmark proposed with included diamonds from a tiara which his mother, Princess Alice owned.

Above you can see the tiara on Princess Alice. The middle photograph is probably the tiara without the diamonds. The ring is platinum, set with a three carat diamond at its centre, with five smaller ones around it. Apparently the ring was originally too large for Princess Elizabeth, and had to be altered two days before the official engagement photograph. Another anecdote- according to the subtle communication between The Queen and her ladies-in-waiting, she twists the ring around her finger when she is annoyed by something.