Best Bet: Elizabeth and James Cabochon Ring

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This onyx cabochon ring has just the right mix of old and new — with its broad rounded band and solid setting, it seems like the sort of ring one might find hundreds of years ago on royalty, except there's something streamlined, even modern, about its design and the glinting, topaz-encrusted, starlike cross at its center. Wear it to elevate daintier knuckle rings or simply on its own as a statement piece.

Elizabeth and James Northern Star Cabochon Ring, $150 at Shopbop.