1, 2, 3 at 72nd St.; B, C at 72nd St.
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Roslyn specializes in re-creating vintage jewelry, although custom design and authentic Art Deco pieces are also available. The eponymous owner curates a dazzling selection of Edwardian pieces and jewels from emerging designers as well. Simple bands start at $285; more complex settings and stones in platinum start at $35,000.