Meet Gregory Jacobson
Gregory Jacobson is the President & CEO of Jacob Mercari and brings over 18 years of experience in the diamond and jewellery industry.
Known for his approachable style and deep industry knowledge, Greg is passionate about helping customers feel confident, informed, and excited about their jewellery purchases. Whether you are choosing an engagement ring, a diamond, a gemstone, or a custom piece, his goal is to make the experience clear, relaxed, and enjoyable from start to finish.
Early in his career, Greg spent time overseas learning the industry from the ground up, including diamond and jewellery manufacturing, global sales, sourcing, and distribution. This hands-on experience gives him a unique understanding of quality, craftsmanship, and value.
At Jacob Mercari, Greg creates a welcoming, no-pressure environment where customers can ask questions, explore their options, and make decisions with confidence. His focus is simple: honest guidance, exceptional service, and jewellery you will be proud to wear for years to come.
Honest, Reliable Service & Advice
- Personal guidance on diamonds, gemstones, and custom design
- Time to compare options and ask questions
- Online shopping and private appointments at our Toronto studio
- Insured shipping across Canada and the USA
Our Core Values
- Be Accountable
We take responsibility for the guidance we provide and the jewellery we offer. - Be Transparent
We explain your options clearly, from diamond and gemstone choices to design details and pricing. - Be Personal
We take the time to understand what matters to you and help you make a confident choice. - Be Proud
We pay close attention to the design, materials, and finishing of every piece. - Be Thoughtful
We consider your style, budget, and how you plan to wear your jewellery as we guide you through the process.
Our History

2007 - Learning the business
After graduating from university, founder Gregory Jacobson began his career in the diamond industry. He travelled to Antwerp, Belgium, to study and work with a large De Beers Sightholder, sharpening his knowledge of diamonds, manufacturing, and global distribution.

2008 - Canada Calling
Greg returned to Canada to join his family’s diamond business, working in wholesale and selling to jewellery stores across North America.

2017 - Jacob Mercari is Born
Greg launched Jacob Mercari to cater to Canada's retail diamond and jewellery market. Today, we aim to create meticulously crafted jewellery pieces and share our passion with our customers.
Looking for a trusted Toronto diamond jeweller?
Book a private consultation to explore natural and lab-grown diamonds, gemstones, custom engagement rings, and fine jewellery. Visit our Toronto studio or shop online from across Canada and the USA.
