|The Diamond Chandelier Drop Demi-Parure (Necklace and Earrings, inset)|
King Khalid Diamond Necklace (very similar, and a confirmed Saudi gift), the Diamond Pear-Shaped Pendant Fringe Necklace, or the King Faisal Diamond Necklace (another confirmed Saudi gift).
Appearances (both Necklace and Earrings, unless otherwise noted):
5 November 2013: State Visit from South Korea, State Banquet
1992: State Visit to Germany
Photos: Getty Images/Lichfield/Royal Household