Rob Bates to Release Latest Book in His ‘Diamond District Mystery’ Series
“Making a Killing in Diamonds” tells the story of Mimi Rosen, the disappearance of a scientist, and the murder of lab-grown diamond CEO.

The mystery is the fourth and final installment in his “Diamond District Mystery” series.
The fictional story is set on Manhattan’s 47th Street, as the murder of a lab-grown diamond CEO sends shockwaves through the industry, illuminating the high-stakes conflicts, ethical complexities, and generational tensions facing the trade today.
The 252-page novel explores themes that are relevant to both the jewelry trade and larger luxury industry.
In the book, Bates explores questions like “What happens when disruption collides with heritage? When innovation threatens not just profit but identity? When ‘ethical’ becomes a marketing buzzword instead of a moral commitment? And when technology allows us to replicate beauty, do we lose, or redefine, what makes something precious?”
The main character is Mimi Rosen, a journalist-turned-amateur-sleuth, who now works for her father’s diamond business and is once again drawn into a mystery as a scientist disappears and a lab-grown diamond CEO is murdered.
Throughout the story, Rosen finds herself stuck between two worlds, the old school diamond dealers of 47th Street that are bound by family, tradition, and silent codes of loyalty and the new frontier of lab-grown gemstones where startups are backed by venture capitalists promising disruption, transparency, and sustainability.
While investigating the murder, she is confronted with truth about the industry’s resistance to change, how it’s become more difficult to define what is “real,” and the blurred ethical lines that define what is valued in luxury.
“Lab-grown diamonds have been the biggest story in the industry for the past few years, and I knew I had to tackle it head-on in the novels,” said Bates who looked to the ethical and emotional dimensions of what we consider to be “real.”
“I first started working on this book around the time ChatGPT premiered. Everyone was really freaked out. At first, I was just going to focus on the diamonds industry, but the debate over artificial intelligence caused me to reflect on larger questions about disruption, technology, and how we define the term ‘real.’”
With Rosen as the main character of Bate’s story, he explores generational shifts in the way younger consumers approach value, identity, and purpose through the lens of this character, who was named after his mother.
Theses shifts, reflected in the real-life rise of self-purchasing women, consumers demanding sustainability, and renewed interest in transparency, form the emotional backbone of the series, he said.
Bates is an expert on the diamond business with more than three decades of editorial authority, investigative reporting, and insider knowledge.
As news director of JCK, Bates has covered every major development in the jewelry world over the last thirty years, including blood diamonds, sanctions, and the technical revolutions brought on by lab-grown gemstones.
He brings his characteristic wit and incisive voice to his latest novel on a plotted murder mystery that is grounded in the real, often hidden, dynamics of the gem and jewelry world.
Making a Killing in Diamonds is both a standalone mystery and a continuation of Rosen’s storyline.
Bates has also written “A Murder is Forever,” “Murder is Not a Girl’s Best Friend,” and “Slay It With a Diamond.”
Bates also co-hosts “The Jewelry District” podcast, which features leading voices from the trade.
Making a Killing in Diamonds is set to release on Aug. 12.
It retails for $16.95 and is available for pre-order on Amazon.
The Latest

Moses, who started at GIA’s Santa Monica lab in 1976, will leave the Gemological Institute of America in May.

Increased competition, falling lab-grown diamond and moissanite prices, and the rising cost of gold took a toll on the moissanite maker.

The earrings, our Piece of the Week, feature pink tourmalines as planets orbiting around an aquamarine center set in 18-karat rose gold.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

“The Price of Freedom” campaign video for International Women’s Day confronts the quiet violence of financial control.


Also, a federal judge has ordered that companies that paid tariffs implemented under the IEEPA are entitled to refunds.

The ever-growing collection, which just expanded with the addition of Olga of Kyiv, features cameos of 12 women from history.

With refreshed branding, a new website, updated courses, and a pathway for growth, DCA is dedicated to supporting retail staff development.

We asked a jewelry historian, designer, bridal director, and wedding expert what’s trending in engagement rings. Here’s what they said.

The annual event will be held in Orlando, Florida, from Sept. 14-17.

The “Outlander” star modeled for the digital cover of the magazine’s spring issue, which features a story on her relationship with jewelry.

This year’s annual congress, which will mark the confederation’s 100th anniversary, will take place this fall in Italy.

Beverly Hills was chosen as the location for the brand’s first store, designed as a “private residence for modern monarchs.”

Kering, Apple, and other retailers have reportedly temporarily closed stores in the Middle East region in light of the recent conflicts.

Beth Gerstein discusses the vibe of the new store, what customers want when fine jewelry shopping today, and the details of “Date Night.”

Nearly half of buyers are prioritizing silver and fashion collections this season, organizers said.

The “Live Now. Polish Later.” campaign features equestrians wearing the brand’s jewels while galloping across the icy plains of Kazakhstan.

The precious metals provider has promoted Jennifer Ashworth to the role.

Nelson will be honored as the inaugural grant winner at the Gem Awards gala on March 13.

The American precious metals refiner’s day-to-day operations remain the same post-acquisition.

These aquamarine jewels channel the calming energy of the March birthstone.

The “Innovative Design” category and award will debut in the Spectrum division of this year’s AGTA Spectrum & Cutting Edge Awards.

Diamond jewelry was the star of the event formerly known as the SAG Awards.

Consumers were somewhat less worried about the future, though concerns about rising prices and politics remained.

Foerster is this year’s Stanley Schechter Award recipient.

Sponsorships and tickets to the annual fundraising event, set for May 31, are available now.

Chicago police and members of the U.S. Marshals Service tracked down the 35-year-old suspect earlier this week in St. Louis.






















