“People’s definition of a diamond’s beauty is opening up,” said Rebecca Selva, the creative director of Fred Leighton, a New York jeweler that sells vintage and contemporary pieces.

Marking five decades of excellence and growth, SHEFI has expanded beyond diamonds into fine jewelry, pearls, and gemstones.

By Maia Coleman A New York diamond dealer pleaded guilty on Thursday to stealing more than $400,000 worth of diamonds from two sellers and replacing them with cheaper lab-grown stones in a scheme ...