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

When Steve's friends Max, Lucy, and Henry get their hands on a map with the location of the legendary Mine Mountain, Steve questions if the map is a fake. Going to this fabled mountain, rumored to contain an endless supply of diamonds, is every treasure hunter's dream. Many believe the mountain doesn't exist, and although Steve is doubtful about the map's authenticity, the gang convinces Steve and Kyra to embark on a journey to find this magical mountain....

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...

"Dink, Josh, and Ruth Rose solve a mystery at the Museum of Science"--

"A thrilling sequel to the groundbreaking thriller, Widows. After serving a lengthy sentence for the murder of her husband, Dolly Rawlins is free from prison. And she's only got one thing on her mind: the diamonds she stashed before the police caught her. But there are people waiting for Dolly on the outside ­- tough ex-prisoners who know about the diamonds, and they all want a cut. Also waiting for Dolly is DS Mike Withey. He holds her personally...

While on a school trip to the British Arts & Antiquities Museum, John Watson and his friends from the Baker Street Academy get involved in a mystery when the Alpine Star, a famous diamond, is stolen.

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...

David Bengu has always stood out from the crowd. His personality and his physique match his nickname, Kubu-Setswana for "hippopotamus"-a seemingly docile creature, but one of the deadliest in Africa. His keen mind and famous persistence have seen him rise in the Botswana CID. But how did he get his start? His resentful new colleagues are suspicious of a detective who has entered the CID straight from university, skipping the usual beat cop phase....

Arthur "Bash Man" is the school thug, paid in candy to bully and threaten other students. When genius orphan Darius Drake employs Arthur to help him discover the origin of a suspicious threat, written in blood, they uncover a mystery that involves Darius's estranged grandfather, who was imprisoned for forging evidence in a search for a long-lost diamond necklace worth millions. The boys make the dangerous decision to search for the jewels themselves...