When Pippa Middleton and her longtime boyfriend James Matthews got engaged [1], the news came with an incredibly special ring. It didn't take long for Pippa to step out and show off her diamond sparkler [2], a square-cut stone that shines even brighter in the sun. While Pippa wore a classic eyelet sundress when she made an appearance in London — accessorizing with simple studded sandals, a crossbody bag, and pearl earrings — her new jewel was the opposite of basic. Read on to zoom in on the unique ring [3] that's since played up many a pretty dress [4] and casual jeans, then look back at her gorgeous Giles Deacon wedding gown [5].
