1. Chow Tai Fook unveiled a stunner of a necklace in Hong Kong on Sept. 3. The ornate piece, dubbed “A Heritage in Bloom” (top) and designed by master gem carver and jewelry artist Wallace Chan, showcases a 104 ct. brilliant-cut round that is at present the largest Forever-mark diamond in the world. The stone, along with 23 other diamonds in the piece, was cut from the Cullinan Heritage, a massive—and massively rare—507.55 ct. type IIa rough diamond that the jeweler acquired in 2010. In total, the necklace boasts 383.4 cts. of white and pink diamonds, plus jadeite and mutton-fat white jade. “An Inheritance in Bloom” might be more like it. Emma Roberts (photo: Axelle/Bauer-Griffin/Getty Images); 1.53 ct. and 1.51 ct. Tobey stud earrings with 0.57 ct. t.w. diamonds; $50,500; Martin Katz, Los Angeles; 310-276-7200; martinkatz.com 2. We�