About Us

MDL Diamond Merchants is a premier diamond wholesaler and manufacturer, proudly serving businesses and consumers across Canada and the United States since 1979. With offices in Antwerp, Tel Aviv, and Toronto, we provide high-quality diamonds at the most competitive prices.

Recognized as the Canadian Jewellers Association (CJA) 2025 Supplier of the Year, MDL Diamond Merchants is a premier, second-generation family owned and operated diamond wholesaler and manufacturer proudly serving retail jewellers, trade buyers, and consumers across Canada and the United States since 1979. Operating from our global headquarters in downtown Toronto, alongside strategic international offices in Antwerp and Tel Aviv, we maintain an extensive, ready-to-ship inventory serviced directly by our team of GIA-trained associates.

About Us

Our comprehensive catalog features rigorous third-party certifications, including GIA-certified, IGI-certified, and HRD International-certified loose diamonds. We supply both precision-cut natural diamonds and sustainable lab-grown options to meet every standard and budget. As authorized dealers of verified ArcticMark Canadian Diamonds, Eternity conflict-free diamonds, Hearts & Arrows master cuts, and Novus Laboratory Created Masterpieces, we guarantee uncompromising ethical standards and end-to-end supply chain traceability. Every transaction is fully Kimberley Process compliant, reinforcing our lifelong commitment to responsible sourcing.
Leveraging our global market connections, we supply a vast range of wholesale loose diamonds—spanning classic round brilliant cut diamonds and unique fancy shapes—alongside finished fine jewellery collections, including engagement rings, wedding bands, stud earrings, tennis bracelets, and tennis necklaces in diverse sizes and styles.

Beyond our commercial partnerships, Isaac actively contributes to the industry's educational framework. Through collaborative mentorship initiatives and seminars with OCAD University, Georgian College's Jewellery Design, Bench Skills and Business Program, and the Canadian Gemological Association (CGA), MDL reinforces its enduring pledge to the craftsmanship, education, and long-term prosperity of the Canadian jewellery trade.

Cultivating the Next Generation: Leadership, Mentorship & the Power of Partnership

At MDL Diamond Merchants, our commitment to the Canadian jewellery industry extends far beyond wholesale distribution — it is rooted in actively building its future. Led by second-generation diamantaire and GIA Graduate Gemologist Isaac Mimar, MDL is deeply dedicated to nurturing emerging talent and empowering the next wave of entrepreneurs.
Through our pioneering Inventory Partnership Program (IPP), we provide qualified new entrepreneurs and emerging jewellery designers the ability to ignite and elevate their businesses with zero upfront capital. By offering virtual and direct access to our comprehensive, on-hand inventory of certified natural and lab-grown diamonds, IPP removes financial barriers to entry, enabling new businesses to scale with confidence from day one.

2018

Mission Statement

Our mission is simple: To provide jewelry retailers, wholesalers, and trade partners with exceptional quality GIA and IGI certified natural and lab-grown loose diamonds at competitive wholesale prices. Operating internationally from our offices in Antwerp, Tel Aviv, and Toronto, we seamlessly supply the industry with certified diamonds and fine diamond jewelry, ensuring unmatched efficiency, transparency, and ethical sourcing.
Our advanced real-time online inventory and pricing platform allows trade clients to browse, price, and present stones to their customers with live availability and customizable markups—streamlining B2B supplier-to-retailer operations for a faster, more profitable experience. At MDL Diamond Merchants, we are committed to growing and succeeding hand-in-hand with our valued clients, delivering superior diamonds, fine jewelry, and dedicated support every step of the way.