Lab-grown diamonds · Français

Lab-grown diamonds, certified and set in Montreal.

Xact3D supplies IGI and GIA certified lab-grown diamonds in Canada, priced in Canadian dollars, and sets them in engagement rings made in our Montreal workshop in 3 to 4 weeks.

What a lab-grown diamond is

A lab-grown diamond is a real diamond: pure carbon, with the same hardness, fire and brilliance as a diamond mined from the earth. It is grown in a laboratory, either by chemical vapour deposition (CVD) or by high pressure, high temperature (HPHT). Without lab equipment, a jeweler cannot tell the two apart.

Lab-grown diamonds are graded on the same four Cs as natural ones: cut, colour, clarity and carat. Every certified stone comes with a report that records those grades and the method used to grow it.

Certified by IGI and GIA

The two major laboratories for lab-grown diamonds are IGI (International Gemological Institute) and GIA (Gemological Institute of America). Our lab-grown diamonds carry a report from one of them, so you know exactly what you are buying. In our search, you can filter by certificate and open each report.

How lab-grown diamonds are priced

A lab-grown diamond usually costs much less than a natural diamond of the same size and grades, because it can be produced to order rather than mined. Within lab-grown diamonds, price follows the same logic as natural stones. Cut quality, colour, clarity and carat weight move the price, and the jump between carat sizes is steep.

Lab-grown prices also change more often than natural ones. That is why we show live prices in Canadian dollars in our diamond search rather than a fixed price list. Create a free account to see them.

From the diamond to the finished ring

We do not only sell the stone. Choose a lab-grown diamond and we set it in a ring from our engagement ring collection, or in a custom design, made in 14K or 18K gold or platinum at our Montreal workshop.

  1. Choose the diamond — search by shape, carat, colour, clarity and certificate.
  2. Choose the ring — pick a design from the collection or send us your own idea.
  3. Approve the render — you see a photoreal 3D render before any metal is cast.
  4. Made and set in Montreal — cast, set, polished and inspected in our workshop.
  5. Delivered — shipped insured across Canada, typically 3 to 4 weeks after you choose.

Lab-grown or natural?

Both are real diamonds, and we set both. Lab-grown gives you a larger or higher-graded stone for the same budget. A natural diamond is rarer and formed by nature, which matters to some buyers. If you are unsure, search both side by side and compare them. Our questions and answers cover the differences in more detail.

For jewelers

Jewelry retailers get wholesale pricing on the same inventory once their business is verified, plus our CAD design, casting and setting services under their own brand. Learn how we work with the trade.

IGI · GIA

Certified lab-grown diamonds

3–4 wk

Diamond to finished ring

CAD $

Prices in Canadian dollars

Create a free account to see live prices on lab-grown diamonds, or ask us about a ring.

Frequently asked

Is a lab-grown diamond a real diamond?
Yes. A lab-grown diamond is pure carbon with the same crystal structure, hardness and sparkle as a mined diamond. The only difference is its origin: it is grown in a laboratory over weeks instead of formed underground over millions of years.
Who certifies your lab-grown diamonds?
Our lab-grown diamonds are graded by IGI or GIA, the two major laboratories for lab-grown stones. Each certificate records the cut, colour, clarity and carat weight.
How long does it take to get an engagement ring with a lab-grown diamond?
Typically 3 to 4 weeks, from choosing the diamond to a finished ring. We source the stone while the ring is being made in our Montreal workshop.
Do I need to be a jeweler to search your lab-grown diamonds?
No. Anyone can create a free account and search our lab-grown and natural diamonds with prices in Canadian dollars. Verified jewelry professionals see wholesale pricing.
Can you set a lab-grown diamond in one of your engagement rings?
Yes. Every ring in our collection can be made with a lab-grown or a natural diamond, in 14K or 18K gold or platinum.
Do you ship across Canada?
Yes. Finished rings and loose diamonds ship insured across Canada by FedEx or Purolator.