Emerald Necklace, Earrings, & Bracelet Set
Kate Middleton was seen wearing this $2.5 million set of emerald earrings, necklace, and bracelet at the 71st BAFTA Awards in 2018.
Scarab Brooch
The Duke of Edinburgh gave his wife this Scarab Brooch in 1966. Made of gold, rubies, and diamonds, the brooch is worth $50,000. While it is not one of the most expensive jewels that she owns, she loves this brooch dearly.
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