DIAMOND KING: The Uncut Story of Martin Rapaport
From the bustling streets of New York City’s Diamond District, one name shines brighter than most: Martin Rapaport. A visionary, a disruptor, and a relentless advocate for transparency, Rapaport has spent decades shaping the global diamond industry, leaving an indelible mark that continues to influence every facet of the trade.
Born and raised with an entrepreneurial spirit, Rapaport’s journey into the sparkling world of diamonds began not with inherited wealth or a family legacy, but with a keen intellect and an unwavering belief in fairness. He famously started as a diamond sorter in 1975, learning the intricate details of the business from the ground up. This hands-on experience proved invaluable, giving him an insider’s perspective that many industry titans lacked.
The Birth of a Benchmark
It was in 1978 that Rapaport unveiled what would become his most iconic contribution: the Rapaport Diamond Report, or “Rap Report.” In an industry often shrouded in secrecy and opaque pricing, this weekly price list for polished diamonds was a seismic shift. Before the Rap Report, diamond pricing was a fragmented, often inconsistent affair, heavily reliant on individual negotiations and limited information. Rapaport’s revolutionary publication brought a much-needed standardization and transparency, quickly becoming the industry’s de facto benchmark.
“I wanted to bring order to chaos,” Rapaport has often stated, reflecting on his motivations. “Buyers and sellers needed a reliable, independent reference point. The Rap Report provided that.”
The initial reception wasn’t universally warm. Some established players viewed Rapaport as an unwelcome disruptor, challenging long-held traditions and profit margins. Yet, the report’s undeniable value proposition—fairness, clarity, and a level playing field—eventually won over the majority. Today, it’s virtually impossible to engage in serious diamond trading without referencing the Rap Report.
Beyond the Price List: A Crusader for Change
But Martin Rapaport is more than just a price list publisher. He’s a fervent advocate for ethical practices, responsible sourcing, and consumer protection. He has been a vocal proponent of the Kimberley Process, an international certification scheme that aims to prevent the flow of conflict diamonds. His passionate speeches and editorials frequently challenge the industry to uphold higher standards, often sparking lively debates and pushing for necessary reforms.

He also recognized the growing importance of the internet early on. In the mid-1990s, he launched RapNet, an online diamond trading network that further democratized the market, connecting buyers and sellers globally and expanding access to information. This platform cemented his legacy as a technological pioneer in a traditionally conservative industry.
A Lasting Legacy
Today, Martin Rapaport remains a formidable presence in the diamond world. While his company, the Rapaport Group, has expanded into various services including publishing, research, and trade shows, his core mission of promoting fair and ethical trade persists. He continues to challenge, to innovate, and to remind the industry of its responsibility to both its customers and the communities from which diamonds originate.

Martin Rapaport’s story is a testament to the power of one individual’s vision to transform an entire industry. From a simple sorter to the “Diamond King,” his journey is an inspiring tale of transparency, tenacity, and the unwavering pursuit of a more equitable and ethical diamond trade. His legacy, much like the diamonds he values, is truly forever.