The showstopper in question: a Pomellato necklace featuring a 55.96 carat tanzanite stone, set in a bespoke bezel at the base of 78 gold-plated modules, each pavé-set with white diamonds.

The showstopper in question: a Pomellato necklace featuring a 55.96 carat tanzanite stone, set in a bespoke bezel at the base of 78 gold-plated modules, each pavé-set with white diamonds.

“Her jewelry and carvings are a feast for the eyes.” In 2013, Ms. Sarna won the association’s Carving Award for L’Heure Bleu, an abstract carving of a 703-carat blue-violet tanzanite set ...