This striking late-1920s sapphire, emerald, and gold necklace was tagged with a $50,000–$70,000 estimate before the New York Jewels Sale at Christie’s on June 15. It went for a hefty $152,000. “Beyond its sheer aesthetic beauty,” says Daphne Lingon, senior VP with Christie’s jewelry, “I think the strong price can be attributed to ­several factors, including rarity, individuality, and provenance.” And did we mention this three-strand, 15¼-inch collar was hand-wrought by Louis Comfort Tiffany himself? Never mind that it’s been off the market for almost a century. “It had been owned by the same family since its purchase in 1928 and had never before been offered at ­auction,” says Lingon. “Louis Comfort Tiffany’s works come up only every few years on average.” In other words, we’ll be waiting a while for another luminous stained-glass-like stunner.