toronto showroom

Who We Are.

Quality, Service & Attention to Detail.

Honest & Reliable Service. Informed Advice.

Private, One-on-One Meetings

diamond loop and tweezer

Our Philosophy

We and our partners uphold the following core values:

  • Be Accountable: All products must be of ethical and conflict free sources.
  • Be Transparent: All offices, factories and facilities are subject to strict auditing.
  • Be Charitable: Give back to the community through donations, jobs & training.
  • Be Proud: Our workmanship is of the highest standards in the industry.
  • Be Mindful: Only use paper products when necessary and reduce carbon footprint.

Socially Responsible. Eco-Friendly & Conflict Free.

We strive to produce the finest quality jewellery right here in Toronto, Canada. Every piece of jewellery manufactured by Jacob Mercari is done so in an ethical and environmentally sustainable manner.

We Are Ethical.

We only work with loose diamond manufacturers compliant with an external auditing process to ensure all diamonds are conflict free. We are big fans of the Responsible Jewellery Council as they do a very good job of ensuring a proper chain of custody is being followed. Learn more here.

We Have Eco Options.

All of our diamond and jewellery products are sourced in a fair and responsible manor. We verify all channels and only work with manufacturers we are comfortable with. That being said, for the customer looking for a ring or jewellery piece that goes the extra mile in terms of the environment, we have options for you.

We Give Back.

Our philosophy involves making a positive impact and doing good with some of our profits. We donate a percentage of our profits to worthy causes surrounding the diamond and jewellery industry. We want to help improve the lives of those working and supporting our industry. 

Meet Greg!

Greg Jacobson profile picture

Gregory Jacobson is the President & CEO at Jacob Mercari. 

He will be the person you will be in contact with to discuss any of your diamond and jewellery questions. Greg is easy to deal with and knowledgeable about everything related to the jewellery industry. His goal is to make sure you are educated correctly and super excited about anything you decide to purchase through us!

Greg has over 15 years of experience in the diamond and jewellery industry. He is passionate about helping his customers make the right decisions regarding their jewellery purchases. He spent over a year in the early days overseas, learning everything from manufacturing diamonds and jewellery to overall global sales and distribution of goods.

Greg’s goal is to provide a relaxed, stress-free environment for customers to learn about diamonds, gemstones and other types of jewellery.

Book Your Meeting Today!

By Appointment Only. Please Book Below.


27 Queen St E #1004
Toronto, ON M5C 2M6

Call or Text Message:

(416) 861-8204

Hours of Operation:

Monday – Thursday – 9:00am – 5:30pm EST
Friday – 9:00am – 4:00pm EST
Saturday – By Appointment Only 

Evening and Saturday Consultations are Available by Appointment

Say Hello!

We are here to help. Ask a question or request an appointment below.

oval rose gold diamond ring

Available By Appointment Only.

Monday – Thursday 9:00am – 5:30pm EST
Friday – 9:00am – 4:00pm EST

Click here for up-to-date hours

Evening and Saturday Consultations are Available

Download our idea book.

Enter your information below