When Kate Middleton stepped out wearing a large citrine ring at Prince Harry and Meghan Markle's wedding and to Wimbledon, it was assumed that the ring was a new gift from Prince William.

And sometimes Kate sports a citrine ring with a distinct yellow hue, and it is believed to have joined Kate's jewellery collection long before she became a royal. When Kate and William's youngest ...

While the match was riveting, most were focused on the Duchess, who sported a bold and bright yellow dress by Dolce & Gabbana, and the most stunning accessory to match–a citrine ring gifted to ...

But the origin of Kate Middleton's citrine ring is proving to be quite the mystery. The square yellow ring was first spotted by royal fans at the wedding of Prince Harry and Meghan Markle.

The ancient Greeks carved rock crystal ornaments out of citrine, Roman pontiffs donned citrine rings and it was a hugely fashionable gem stone in Victorian Scotland. Today's citrine, which comes in ...