Jacob Mercari

Last reviewed: August 12, 2026. Business status: Active.

Last reviewed: August 12, 2026. Jacob Mercari is an active Toronto fine-jewellery business with a confirmed official website, studio contact route and appointment information. The business identifies its founder as Gregory Jacobson and offers engagement rings, diamonds, gemstones and custom jewellery.

For couples researching custom engagement rings Toronto, Jacob Mercari offers a choice of a ready setting, a certified natural or lab-grown diamond, or a one-of-a-kind design developed with its team. Private consultations are available in the Toronto studio or online.

Services and specialization

Jacob Mercari’s wedding-focused offering centres on engagement rings, wedding bands, loose diamonds and custom design. Its engagement-ring builder lets shoppers begin with a natural diamond, lab-grown diamond, gemstone or setting. The site also lists natural diamonds, lab-grown diamonds and coloured gemstones including sapphire, ruby, emerald, tourmaline and amethyst.

For a bespoke project, the business says clients can choose a setting and certified diamond or work with the team on a one-of-a-kind piece. It also sells fine jewellery beyond bridal pieces, including diamond earrings, pendants, bracelets and necklaces. Those broader collections may be useful for couples considering wedding-day jewellery or a later gift, but the official site does not describe them as wedding packages.

• Custom engagement rings and custom wedding bands
• Natural and lab-grown diamond selection
• Gemstone options for ring projects
• Online and in-person private consultations

Service area and who it may suit

The studio is in Toronto and operates by appointment. Jacob Mercari states that it serves clients across Canada and the USA through virtual consultations and shipping, while Toronto-area couples can arrange an in-person meeting.

This may suit couples who want to compare natural and lab-grown diamond options, select a centre stone before choosing a setting, or bring inspiration images to a design discussion. It may also suit clients outside Toronto who prefer an online consultation. The business does not publish a list of Ontario regions for in-person service, so couples travelling to the studio should confirm the appointment details directly.

• Toronto studio appointments
• Virtual consultations for Canada and the USA
• Insured FedEx shipping across Canada and the USA on orders over $400

Confirmed strengths and practical limitations

A documented strength is the range of stone routes: the official site offers both natural and lab-grown diamonds, as well as coloured gemstones, alongside custom design. It also states that selected diamonds are certified and that Toronto appointments can be held in person or online.

The company describes its sourcing philosophy as ethical and conflict-free and says its partners’ offices, factories and facilities are subject to auditing. These are the business’s stated practices, not an independent certification assessment. A practical limitation is that the public pages do not set out the full sourcing documentation, certification details for every stone, or a standard custom-design specification; request those details for the specific diamond and ring under consideration.

• Documented choice of natural, lab-grown and gemstone options
• Documented Toronto and virtual consultation routes
• Public sourcing statements should be verified against project-specific documentation

Pricing

Current pricing is published for selected engagement-ring settings on the official online shop. At review, examples started at $1,050 CAD for the Heritage Solitaire setting, $1,680 CAD for the Lumina Solitaire setting and $2,050 CAD for the Helix Pavé setting with a lab-grown diamond band. These are listed as starting prices and should not be treated as complete ring prices, because the centre stone and chosen specifications can change the total.

A universal price list for custom commissions is not explicitly published. Couples should ask for a written quote covering the chosen stone, metal, setting, customization, applicable taxes, shipping or collection, alterations and any other charges before committing.

• Selected setting prices are shown in Canadian dollars
• Custom-project pricing is not explicitly published as a standard rate

Contact and booking

Book through the official contact form or email hello@jacobmercari.com. For time-sensitive requests, the business directs clients to call (416) 861-8204. Its Toronto studio is listed at 27 Queen St East #1004 and is by appointment only.

The published standard studio hours are Monday through Thursday, 9:00 a.m. to 5:30 p.m. The site says evenings and Saturdays may be available on request. Availability is not independently confirmed, so contact the business before visiting or making travel plans.

• Email: hello@jacobmercari.com
• Phone: (416) 861-8204
• Studio visits require an appointment

What couples should confirm

Before booking, confirm whether the consultation is in person or virtual, the current appointment availability and the expected custom-ring timeline. The business notes that most custom rings take several weeks, with timing varying by design, stone selection and level of customization.

For the chosen stone, ask for the applicable grading report, the full specification and the source-related documentation available for that item. For the finished ring, confirm the written quote, deposit and payment schedule, production milestones, resizing approach, return or change terms, shipping coverage and aftercare that will apply to the order.

• Proposal-date feasibility and production timeline
• Diamond or gemstone report and item-specific documentation
• Complete written quote, payment terms and policies
• Sizing, delivery, returns and aftercare

Business background

Jacob Mercari says it was founded in Toronto by Gregory Jacobson and launched in 2017 for Canada’s retail diamond and jewellery market. Its About page identifies Jacobson as President and CEO and describes prior experience in the diamond and jewellery industry.

This background helps establish the business identity, but a couple’s decision should remain based on the current design proposal, stone documentation, written terms and consultation experience for their own order.

Continue planning

• Canada Wedding Directory
• Wedding Bridal Guide

Frequently asked questions

Does Jacob Mercari offer custom engagement rings in Toronto?

Yes. The official site says clients can select a setting and certified natural or lab-grown diamond, or work with the team on a one-of-a-kind custom engagement ring in Toronto.

Can I book a virtual consultation with Jacob Mercari?

Yes. Jacob Mercari states that it offers virtual consultations for clients across Canada and the USA, as well as appointments at its Toronto studio.

Does Jacob Mercari sell both natural and lab-grown diamonds?

Yes. Its official site lists both natural and lab-grown diamonds and says clients can use either option when planning a custom engagement ring.

Do I need an appointment to visit the Toronto studio?

Yes. The official contact page says the Toronto studio is by appointment only. It lists Monday to Thursday hours, with evenings and Saturdays available on request.

Are custom ring prices published?

No standard custom-commission price list is published. The site shows starting prices for selected engagement-ring settings, while the final price of a custom ring depends on its stone and design choices.

Sources checked

• Custom Engagement Rings & Diamonds Toronto | Jacob Mercari
• Contact Us | Jacob Mercari
• Toronto Diamond Jeweller | Meet Jacob Mercari

Address: 27 Queen St East #1004, Toronto, Canada

Phone: (416) 861-8204

Website: https://jacobmercari.com/