From the priceless Tiffany & Co. jewel to the How to Lose a Guy in 10 Days necklace, these jaw-dropping gems are unforgettable Kaitlyn is a former Assistant Style & Beauty Editor at PEOPLE.

Knight worked closely with the jeweler on customizing her Medi Classic four prong solitaire diamond engagement ring. After hours of researching their website, Knight opted for a 14K yellow gold ...

The trend that started with Jennifer Lopez's Radiant cut pink diamond engagement ring ... Brilliant solitaire engagement ring—with a surprisingly thick yellow gold band. While many have chosen ...