: A go-to for vintage and art deco styles; Mary-Kate Olsen’s vintage 4-carat European cut ring is a prime example of their timeless craftsmanship.

Legacy brands remain a top choice for their prestige and access to rare, high-carat stones.

: Known for classic glamour; Nick Jonas famously shut down a London store to select Priyanka Chopra's 4-carat cushion-cut ring.