CAN'T-MISS COLLECTION Rock Steady New York City’s Rockefeller Center inspired Doryn Wallach to unveil a classic collection—note the Art Deco–esque columns—of white pearl jewelry in 18k yellow gold. “Pearls have always been timeless, sophisticated, and typically conservative,” she says. “I chose to work with them because I wanted to put my own modern twist on an old classic.”  Top: pendant necklace in 18k gold with a South Sea pearl, agate, and 0.8 ct. t.w. diamonds, $12,650, ring in 18k gold with a South Sea pearl and 0.5 ct. t.w. diamonds, $5,500; inset: studs in 18k gold with freshwater pearls and 0.35 ct. t.w. diamonds, $860, Doryn Wallach Jewelry, NYC, 800-906-0761, dorynwallach.com   HOT STOCK TIP Pop Pearls You may know Yoko London for its ultrafine-quality pearls, but a wealth of modern earring designs ensures that