Turkish Delights

Umit Berksoy's tiny atelier

Umit Berksoy's tiny atelier, hidden away in Istanbul's Grand Bazaar since 1968, has been discovered by the world's jewelry connoisseurs. The queen of Spain commissioned Byzantine-style earrings in 24-karat gold. Sharon Stone chose a platinum dragonfly in diamonds and cabochon rubies—one of the brooches he custom-crafts in gold, silver, or platinum in the shape of bees, starfish, lizards, frogs, often with large, unusual stones (from $1,500). Other treasures: stunning Russian antique jewelry. At Inciciler Sokak, Nos. 2-4-6; 90-212-522-3391.