The Global Diamond Broker
Since 1983
The Global Diamond Broker Experience
Working with The Global Diamond Broker isn’t like walking into a jewelry store — and that’s the point.Whether you’re sourcing a rare investment stone, designing the perfect engagement ring, or creating something personal that’s never existed before, Colin will walk you through every step. From initial conversation to sourcing, design, and final delivery, every detail is handled with care, precision, and decades of global expertise.No two clients are the same. That’s why every experience is custom — not just the diamond, but the entire journey. Education, transparency, access, and world-class craftsmanship are all part of the process.This is where imagination meets execution. And where your most important moments begin with the most beautiful diamonds on earth.
The Difference Between a Broker and a Retailer
Retailers sell from inventory. Brokers represent you. When you work with a retailer, you’re limited to what they’ve already purchased — often marked up through multiple layers of the supply chain. As brokers, we don’t carry stock or push what’s on hand. We go out and source the most beautiful diamond on your behalf, at a price that reflects its true value — not inflated margins. It’s a smarter, more transparent way to buy.
Want to Know What That Diamond Really Costs?
Transparency should be the standard — but in the diamond industry, it rarely is. That’s why we offer something no traditional retailer will: a clear, unbiased market valuation.Send us any GIA or IGI certificate number, and we’ll tell you the true market price — before the retail markup, before the sales pitch, and before you overspend. Whether the diamond is lab-grown or natural, our team will review the specs and deliver a straightforward, broker-level quote within 24 hours.This isn’t a sales tactic — it’s a service. Because we believe every buyer deserves to make their decision with total confidence, armed with real information, and free from industry smoke and mirrors.
Meet The Global Diamond Broker
With over 43 years in the diamond industry, Colin has worked every side of it — from launching a national jewelry chain to brokering millions in diamonds from the world’s top sources.As North American Distribution Manager for Grayson’s Diamonds of Antwerp, Colin supplied exceptional stones across North America. He was later appointed one of the first five global partners of the iconic Argyle Pink Diamond Mine, where he successfully bid on some of the rarest pink diamonds ever released.Colin's mentors — Edward Gryspeerdt, a former De Beers site dealer, and Eddy Elzas of the Rainbow Collection — taught him to see diamonds as both art and enduring value.Today, as The Global Diamond Broker, Colin helps clients skip retail myths and markups and access the most beautiful diamonds on earth — directly. Whether you’re after an heirloom engagement ring or a rare investment stone, beauty is the promise."There will always be bigger. There will always be smaller. But there will never be more beautiful than ours — and ultimately yours."
The Diamond GOAT
There are diamond brokers. And then there’s Colin.Beyond being the best diamond broker in the industry, Colin has been decorated for his philanthropic work — earning both the Duke of Kent Medal and the St. John’s Ambulance Donat, presented by members of the Royal Family.His work with colored diamonds has helped shape the modern market for rare pinks, blues, and investment-grade gems. He’s been part of historic auctions, successful multi-million-dollar tenders, and collections that now sit in some of the world’s most secure vaults.But perhaps the most defining part of his journey is this: Colin never settled. He didn’t stay in retail. He didn’t become just another wholesaler. He took all the insider knowledge — all the sourcing, pricing, grading, and negotiation expertise — and brought it straight to the public.That’s how The Global Diamond Broker came to be.And why he’s called the GOAT.
The Hard Truth Podcast.
Lifting the veil on how diamonds are priced, sold, and sourced. No fluff — just clarity, so you can buy with confidence, not confusion.Hosted by The Global Diamond Broker himself, this is the industry’s most honest conversation. Each episode unpacks the truth behind what really drives diamond pricing, the markups no one talks about, and the insider strategies that retailers hope you never learn.Whether you’re buying your first engagement ring or your fifth investment-grade diamond, this podcast gives you the tools to think like a broker — not a buyer.
Looking for Something Exceptional?
We’re Here to Help.
The more details you share, the better we can assist you. Whether you're looking for a specific diamond, a custom piece, or just starting your search, include as much information as you can. We will be in touch within 24 hours.
Email: [email protected]
Want to Know What That Diamond Really Costs?
Send us any GIA or IGI certificate number and we’ll reveal the true market price—before the retail markup. Whether it’s lab-grown or mined, we will deliver a transparent quote within 24 hours so you can buy with total confidence.
Email: [email protected]
The Global Diamond Broker Newsletter
Get the latest information in the diamond industry straight to your inbox.
