Chris Jackson/Getty Images

JOHN D MCHUGH/AFP/Getty Images

10. The Diamond Serpent Necklace: Packed with round and square-cut diamonds, this classic diamond necklace is said to have been presented to Camilla by her now-husband, the Prince of Wales, in the years before their wedding. She’s been wearing it in public since at least 2001.

Chris Jackson/Getty Images

9. The Pink Topaz Demi-Parure: Also said to have been gifts from the Prince of Wales, the pink topaz and diamond clasp of this five-stranded pearl necklace, as well as a pair of coordinating diamond and pink topaz earrings, date to the 1830s. Camilla has had the suite of jewels for at least a decade, and she wears the pieces for both day and evening engagements.

Stuart C. Wilson/Getty Images

8. The Cubitt Tiara: An heirloom piece of jewelry from Camilla’s family, this diamond floral tiara belonged to her grandmother, Sonia Keppel Cubitt. It’s been a wedding tiara for more than one member of the family, and now Camilla wears it occasionally for white-tie events. (Read more about the tiara over here!)

LEON NEAL/AFP/Getty Images

7. The Queen Mother’s Amethyst Heart Necklace: This delicate amethyst and pearl necklace, which features a distinctive heart-shaped pendant, was Queen Alexandra’s wedding gift to Elizabeth Bowes-Lyon (better known to us as the Queen Mother) in 1923. On at least one occasion, Camilla has paired the striking necklace with her oval-shaped amethyst earrings.

LEWIS WHYLD/AFP/Getty Images

6. The Saudi Emerald Suite: Camilla has received several suites of jewelry during visits to the Middle East, but the most modern and wearable of them all is this emerald set. The suite includes a necklace, a bracelet, and a pair of earrings.

VIDAR RUUD/AFP/Getty Images

5. The Turquoise Demi-Parure: Another suite of jewels that Camilla inherited through her own family connections, this distinctive set of turquoise and diamond jewels includes an elaborate necklace and a coordinating pair of earrings. She’s been wearing the demi-parure in public for almost two decades.

Tim Whitby/Getty Images

4. The Aquamarine and Diamond Suite: Another demi-parure from Camilla’s collection, this set features pale blue aquamarines and diamonds. The suite includes a necklace with a large pendant, a bracelet, and a pair of earrings.

Chris Jackson/Getty Images

3. The Diamond Demi-Parure: One of Camilla’s most-worn sets of gala jewelry is this demi-parure made of various sizes of pear-shaped diamonds. The suite, which includes a necklace and a large pair of earrings, is easy to coordinate with other pieces from her jewelry box.

Pool/Getty Images

2. The Greville Festoon Necklace: Five magnificent strands of diamonds make up this elaborate necklace from Cartier, which was a part of Mrs. Greville’s famous jewelry bequest to the Queen Mother. The piece can be worn in a smaller setting, with just three strands of diamonds, but so far Camilla has only worn it with all five strands of sparkling diamonds.

Eddie Mulholland – WPA Pool/Getty Images

1. The Greville Tiara: Another piece from the Greville bequest, this tiara was a favorite of the late Queen Mother, and now it’s a favorite of the Duchess of Cornwall. Originally made by Boucheron in 1921, the tiara has a distinctive honeycomb design; it was later altered by Cartier for the Queen Mother. The Queen inherited it in 2002, and she gave it to Camilla as a long-term loan shortly after her wedding. (Read more about the tiara over here!)