10. The engagement ring of Queen Elizabeth
Donn by: Elizabeth II, the Queen
Been in possession since 1947
Value Approximation: $300,000*
In addition to being a beautiful ring, Queen Elizabeth II’s magnificent engagement ring is a charming representation of the royal romance between her and Prince Philip. Made from a tiara that Princess Alice, the mother of Prince Philip, owned, it is set with smaller pavé-set diamonds and a stunning 3-carat solitaire diamond.

The Court Jeweler/Queen Elizabeth’s Engagement Ring
This $300,000 ring has been owned since 1947 and represents not only a royal love tale but also the enduring traditions and ties of the family, all of which are reinforced and adorned with classic diamonds.
