Royal Jewelers

Little wonder jewelry collectors from all over the planet have this 60-year-old business on speed dial: Its inventory of David Yurman bests what’s found even at the designer’s own boutiques; the cases of Marco Bicego and Roberto Coin are unrivaled; the diamond selection is swoonworthy. And the watch stock? It’s a dream team of heavyweights, from Vacheron to Brequet.