Gregory Jacobson

Greg is a second generation diamantaire with over 11 years of experience in the diamond industry. He spent the early years of his career overseas in Israel and Belgium learning from some of the largest diamond and jewellery manufacturers in the world. He is passionate about customer care and finding new and innovative ways to produce the best quality diamonds and engagement rings. He started Jacob Mercari in order to offer customers an educated and fair buying experience. He loves animals and has a dog named Quinton.

Milkiness In Diamonds

An extremely important factor in diamonds in the milkiness present inside of the crystal of any given stone. Milkiness is not one of the 4 Cs but can greatly change the look of the diamond and the amount of sparkle and brilliance a diamond will exhibit. Milkiness in a diamond looks like it sounds. You […]

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Official CanadaMark Distributor

Jacob Mercari is proud to be an official distributor of the CanadaMark loose diamond program. The CanadaMark hallmark program allows us to provide our customers with an independently verified certificate of origin. Each one of our unique engagement rings or wedding rings is made with certified Canadian diamonds. Responsibly mined in Canada’s Northwest Territories. Natural, untreated &

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Princess Cut Diamond

What Is GIA?

GIA stands for the Gemological Institute of America. Their certification of loose diamonds is seen in the industry as the gold standard. What they bring to the table is a standard of grading that can generally be trusted. Keep in mind, each diamond is graded by a GIA certified gemologist. This means there is the

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Welcome to our Blog!!

Thank you very much for stopping by to look at our brand new website!! We look forward to providing you with some interesting industry knowledge and little tid bits on a variety of related issues. The world of custom jewellery can be quite daunting at first glance.  We hope to guide you through in a

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