- IGI-certified diamonds
- Triple Excellent standard
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- Made to order in Toronto
Lab-grown diamonds have gone from niche to mainstream in Canada, and for good reason: they are chemically and optically identical to mined diamonds, independently certified, and a fraction of the price. If you are shopping for a lab-grown diamond in Canada, this guide covers what they are, what they should cost, how to judge quality, provincial tax, and what to watch for — written with the same transparency we bring to every Montare ring.
- Are lab-grown diamonds real diamonds?
- How much do lab-grown diamonds cost in Canada?
- Provincial sales tax on a lab-grown diamond
- Lab-grown vs mined: which is better value?
- How to judge quality: the 4Cs and certification
- How buying a lab-grown diamond in Canada actually works
- Buying lab-grown diamonds in Canada: what to know
- Where to buy lab-grown diamonds in Canada
- Frequently asked questions
Are lab-grown diamonds real diamonds?
Yes. A lab-grown diamond is a real diamond — identical carbon structure, hardness and brilliance — simply grown in a controlled environment instead of mined from the earth. You will see them sold under several names: lab-grown, lab-created, lab diamonds, engineered diamonds, or manufactured diamonds. They all describe the same stone. The only meaningful differences from a mined diamond are origin and price. For a side-by-side look, read our honest comparison of lab-grown vs mined diamonds.
How much do lab-grown diamonds cost in Canada?
A comparable lab-grown diamond typically costs 70–90% less than a mined equivalent of the same size and grade. The stone's price is driven by the 4Cs — carat, cut, colour and clarity — but the biggest variable in what you actually pay is retailer markup, not the diamond itself. Some national chains mark the same stone up several times over. We break exactly that down in what a premium mined-comparable ring is really charging you for. At Montare, all prices are quoted in Canadian dollars, with the cost of the stone and the setting shown transparently as you build.
Provincial sales tax on a lab-grown diamond
An engagement ring is taxed like any other retail purchase in Canada, and the rate depends entirely on where it ships. Some provinces charge only the federal GST; others add a provincial or harmonised tax on top, so the same ring costs a different amount in tax depending on the destination:
| Province / territory | Tax on a ring purchase |
|---|---|
| Alberta, Yukon, NWT, Nunavut | 5% GST only |
| British Columbia | 5% GST + 7% PST = 12% |
| Saskatchewan | 5% GST + 6% PST = 11% |
| Manitoba | 5% GST + 7% RST = 12% |
| Ontario | 13% HST |
| Quebec | 5% GST + 9.975% QST ≈ 15% |
| New Brunswick, Newfoundland & Labrador, Nova Scotia, PEI | 15% HST |
Tax is calculated on the full ring — diamond and setting together — at checkout, so there is no separate tax treatment for the stone itself.
Lab-grown vs mined: which is better value?
For the same budget, a lab-grown diamond lets you buy a noticeably larger, higher-grade stone. That is the core of the value argument. One honest note: like most mined diamonds, lab-grown stones are not bought for resale — choose the ring you love, not a stone you hope to flip. Bought that way, the value is obvious. Our full breakdown of that trade-off is in do lab-grown diamonds hold their value?
Every centre diamond is Triple Excellent, D–E, VVS and at least three carats — the hard calls are made for you.
Design your ringHow to judge quality: the 4Cs and certification
Cut matters most — it is what makes a diamond return light — followed by colour and clarity. If you are new to the 4Cs, start with the 4Cs explained without the jargon, then read why Triple Excellent cut is worth insisting on — and where Triple Excellent vs Very Good actually shows in the stone. Most importantly, only buy a diamond with an independent certificate from IGI or GIA — here is how the two compare for lab-grown stones. As of late 2025, GIA replaced its full colour and clarity grading on lab-grown stones with a simplified two-tier system, which is why IGI's complete 4Cs grading remains the certificate most lab-grown diamonds carry industry-wide — see what changed and why it matters. Every Montare diamond is held to one standard: D–E colour, VVS1–VVS2 clarity, Triple Excellent cut with ideal table and depth, three carats minimum, IGI certified.
How buying a lab-grown diamond in Canada actually works
The process looks different from walking into a mall jeweller and pointing at a case:
- Design. Choose shape, setting style, metal and carat — in a ring builder or with a specialist in a consultation.
- Confirm the stone. The exact diamond is sourced to your specification and certificate, not pulled from generic display stock.
- Craft. The ring is made to order rather than assembled from a warehouse of pre-built sizes.
- Ship. A Canadian-based house ships domestically — no customs paperwork, import duty, or cross-border delay.
Buying lab-grown diamonds in Canada: what to know
- Currency & pricing. Buy from a house that quotes in CAD so there are no exchange-rate surprises at checkout.
- Duties. A ring made to order and shipped within Canada is a domestic purchase — no import duties or customs delays, unlike ordering from a US site.
- Shipping & insurance. Montare ships free and fully insured across Canada, with signature on delivery.
- Made to order vs in-stock. A made-to-order ring is built around your chosen stone and setting, rather than whatever happens to be in a case.
- Guidance. A good house will help you choose — not just sell. If you would like that, book a private consultation.
Where to buy lab-grown diamonds in Canada
You can buy lab-grown diamonds from big marketplaces, national chains, or a specialist. Each trades off differently:
| Source | Trade-off |
|---|---|
| Large online marketplace | Often the lowest sticker price, but impersonal, with little design guidance and inconsistent after-sale support |
| National chain / mall jeweller | In-person, but carries multiple layers of retail markup and a limited in-store selection at the top grades |
| Specialist made-to-order house | A fixed quality floor, transparent pricing, and a ring designed to your exact specification |
Montare is a Toronto-based, made-to-order diamond house serving all of Canada — start in our ring builder or browse engagement rings.
Design your ring in minutes. Every centre diamond is D–E colour, VVS clarity, Triple Excellent cut and at least three carats — IGI certified, made to order in Toronto.
Open the ring builder →Frequently asked questions
Are lab-grown diamonds cheaper in Canada?
Yes — a lab-grown diamond generally costs 70–90% less than a mined diamond of the same size and grade. Buying within Canada also avoids US import duties and currency surprises.
Is a lab-grown diamond a real diamond?
Yes. It is chemically and optically identical to a mined diamond. Lab-grown, lab-created, engineered and manufactured all refer to the same real diamond.
Do I pay duties on a lab-grown diamond in Canada?
If the ring is made and shipped within Canada, it is a domestic purchase with no import duties or customs delays. Ordering from a US retailer can add both.
How much sales tax will I pay on a lab-grown diamond ring in Canada?
It depends on the province. GST-only provinces pay just 5%; HST provinces such as Ontario and the Atlantic provinces pay 13–15%; GST+PST provinces land around 11–12%. Tax applies to the full ring, diamond and setting together.
What certification should a lab-grown diamond have?
Insist on an independent IGI or GIA certificate. Every Montare diamond is IGI certified at D–E, VVS1–VVS2, Triple Excellent, 3ct minimum.
What's the difference between IGI and GIA certification for lab-grown diamonds?
IGI still grades lab-grown stones on the full 4Cs, the same detailed framework used for mined diamonds. Since late 2025, GIA issues a simplified two-tier classification on lab-grown stones instead of specific colour and clarity grades, which is why IGI remains the standard most lab-grown diamonds are certified against.
How long does it take to receive a lab-grown diamond ring in Canada?
Because each ring is made to order, expect a build window of a few weeks before free, fully insured domestic shipping. Start the design process early if you have a specific date in mind.
Ready to start? Design your ring in the ring builder, explore our engagement rings, or book a consultation with our Toronto team.
The Montare standard
Lab-grown · D–E colour · VVS clarity · Triple Excellent · 3ct minimum · IGI certified
Every ring is made to order in Toronto and backed by our lifetime setting upgrade, with free, fully insured shipping.
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