It is one of the primary methods used to create lab grown diamonds. This process mimics the extreme heat and pressure conditions found at Earth’s core. It is a thermodynamic process in which a diamond seed is placed in a specialized press containing pure carbon.

The growth chamber is then subjected to pressures above 870,000 pounds/square inch and heat ranging from 1300 to 1600 Degrees Celsius. It results in carbon melting and attaching to the diamond in 14 varied directions, creating a rough diamond.

It is a relatively newer, economical, and sustainable method of producing lab grown diamonds.

It uses a specialized vacuum chamber filled with carbon-heavy gases, which, when heated to around 800-1,000 Degrees Celsius, turn into plasma, releasing tiny bits of carbon pieces.

These carbon pieces form layers onto the diamond seed, growing a diamond. The CVD Process produces extremely rare Type IIA diamonds, and at Donj Jewellery we follow this method to produce high-quality lab grown diamonds.

Depending on the color, clarity, and carat size, it usually takes around a month’s time to grow lab made diamonds. Once fully formed, they are then cut and polished to be set on a piece of jewelry or sold as loose diamonds.

To the naked eye, one can’t tell apart between lab grown and mined diamonds. It is because they look the same and have the same chemical composition as well as physical and optical properties.

We use the same grading standards as natural diamonds. Each stone comes with a certificate detailing its cut, color, clarity, and carat weight. This raises another question – do lab grown diamonds pass a diamond tester? The answer is YES!

Both lab diamond and earth-mined diamonds score 10 on Mohs Scale, and perfectly pass a diamond tester.

The value of a diamond is measured internationally through the 4Cs of diamond quality, which are cut, color, clarity, and carat weight. Each of these characteristics is measured and graded in a specific way and recorded in the grading report. It’s important to review this information when you buy lab diamonds to ensure you’re getting the best quality.

Absolutely! We offer customization options for most of our pieces. Contact our design team to discuss your unique vision.

We offer complimentary hassle-free 45-day returns and exchanges to guarantee that your purchase meets your expectations.

Yes, we ship worldwide. Shipping costs and delivery times vary by location.

Care instructions for man made diamonds are the same as for natural diamonds. We include a care guide with every purchase.

While we’re primarily online, we do offer virtual consultations where you can get a detailed view of our pieces. If you’re in Montreal, you’re welcome to visit us for an in-person viewing as well!

Typically, custom orders take 2 weeks, depending on the complexity of the design. But our in stock items are shipped overnight.

Yes, all our pieces come with a lifetime year warranty against manufacturing defects in materials and workmanship for the life of your jewelry.