"The story of four couples linked over sevearal decades by one diamond ring, and the woman who launched the most famous diamond campaign in the world"--

A poor art student in New York City discovers a duffel bag full of diamonds in the chaos during an attack at Grand Central Station and is pursued by the Ghost, an assassin who had murdered the bag's owner.

The Millers are far from perfect. Estranged siblings Beck, Ashley and Jake find themselves under one roof for the first time in years, forced to confront old resentments and betrayals, when their mysterious, eccentric matriarch, Helen, passes away. But their lives are about to change when they find a secret inheritance hidden among her possessions - the Florentine Diamond, a 137-carat yellow gemstone that went missing from the Austrian Empire a century...

"When "The Russian Pink" - a stunningly large rose-hued diamond - makes a surprise appearance around the neck of Honey Li, the wife of surging presidential candidate Harry Nash, Alex Turner, an investigator for the Treasury Department's diamond division and former C.I.A. agent, finds himself spiraling down a seemingly endless rabbit hole. A diamond like that always carries secrets, but the web of mystery behind "The Pink" is more complex than Alex...