Lab-Grown Diamonds

Let’s start with the basics

Lab-grown diamonds are diamonds that are created by specialists in a lab – as opposed to natural diamonds, which are mined.

Lab-grown diamonds are sometimes called lab-created diamonds, cultured diamonds, engineered diamonds, synthetic diamonds or man-made diamonds. These names all refer to the same thing.

The main differences between natural and lab-grown diamonds have to do with how they are made and how rare they are. Otherwise, they share the same chemical composition and are optically identical.

What are the benefits of lab-grown diamonds?

Ethical

Although it’s relatively rare these days, some diamond mining has been associated with unethical practices. Since lab-grown diamonds are not mined, they are free of conflict, and their exact origin can be certified. Lab-grown diamonds a great choice for those looking for peace of mind in their diamond sourcing.

Affordable

Lab-created diamonds tend to be less expensive than mined diamonds. This is mainly because the supply chain for lab-grown diamonds is much shorter. Both types of diamonds have the same costs when it comes to cutting, polishing, and inspection, resulting in equally stunning final products.

Sustainable

As with any type of mining, diamond mining can have a significant impact on the environment – even as companies strive to improve their practices. Lab-grown diamonds are more environmentally-friendly since it takes significantly less energy to produce a diamond in a lab than it does to extract it from the earth.

What are lab-grown diamonds?

A common question people have when they think of lab-grown diamonds is: are they real diamonds?

The answer is yes. Lab-grown diamonds are real diamonds. A lab-grown diamond is created in a lab using cutting-edge technology that replicates how a natural diamond develops in the ground. Natural diamonds are simply rarer that lab-grown ones.

Lab-grown diamonds have the same chemical composition and physical properties as mined diamonds. They are not “fake diamonds” or cubic zirconias.

How are lab-grown diamonds made?

There are two common methods that are used to create diamonds in a lab: CVD and HPHT.

CVD stands for chemical vapor deposition. In this method, a diamond “seed” is exposed to carbon-containing gases which are super-heated, causing carbon atoms to stick to the seed, growing a diamond in layers.

HPHT stands for high pressure high temperature. This method is closer to the conditions under which diamonds form naturally, as it uses extremely high pressure and temperature to grow layers of carbon lattice over a diamond seed.

In each case, it takes anywhere from a few days to a few weeks to grow a diamond which is suitable for cutting.

How are lab-grown diamonds certified?

Lab-grown diamonds are certified in the same way as natural diamonds, by the same organizations. When diamonds are sent to a gem lab for grading and certification, they normally use the 4Cs (cut, clarity, colour and carat) to evaluate them.

There are many diamond certification labs out there, some which use different criteria than others. It’s up to retailers to work with labs that they trust to provide the best reports for their customers’ needs.

Randor offers lab-grown diamonds certified by GCAL (Gem Certification & Assurance Lab) and IGI (International Gemological Institute).

Have a question?

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Our Story

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Customer Rings

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Our google reviews

Randor Jewellery Engagement Rings
4.8
Based on 68 reviews
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Catherine Kenwood
Catherine Kenwood
02:50 19 Mar 20
My engagement ring and wedding band were made separately at different places, so they never quite matched. I went to... see Randy to redesign my engagement ring and he made me feel comfortable and confident he could make my rings look like a pair. He was extremely knowledgeable and his prices were very reasonable. My ring turned out beautifully and it now matches my wedding band. Go see Randy, you won't be disappointed!read more
Rajat Kachhadiya
Rajat Kachhadiya
14:17 08 Feb 20
I did my research and had a pretty good idea of what the ring would look like (oval cut with half pave band). Randy and... his team were very kind, attentive and knowledgeable which resulted in the exact ring I envisioned. For the diamond, Randy discussed some key traits to focus on and we found a GIA certified diamond, within my budget and exceeding specifications I was originally aiming for. Overall my experience at Randor Jewellery was great! I definitely recommend checking them out if you are looking for an engagement ring or even other jewellery/watches.read more
Ben Liang
Ben Liang
17:53 02 Dec 19
Randy and the Randor team offers a perfect combination of no-brainer pricing and levels of service and professionalism... generally reserved for higher end retail stores. Couldn't have asked for a more patient and helpful individual than Randy in helping me choose the perfect engagement ring. Thanks again!read more
David Nicholson
David Nicholson
15:37 25 Nov 19
Top Service as always. We got our engagement ring made here and our wedding bands. It's always a pleasure to work with... Randor Jewelers. Top class as always. Great to deal with and so very helpful in all aspects of choosing a ring/s. I would highly recommend.read more
James Zhan
James Zhan
17:21 23 Oct 19
Randy is absolutely a joy to work with. He is very patient, and his prices are very reasonable. The ring turned out to... be gorgeous!read more
Felisa Sapateiro
Felisa Sapateiro
14:03 27 Aug 19
Before I met with Randy I did my research and had a pretty good idea of what the ring would look like (oval cut with... half pave band). Randy and his team were very kind, attentive and knowledgeable which resulted in the exact ring I envisioned. For the diamond, Randy discussed some key traits to focus on and we found a GIA certified diamond, within my budget and exceeding specifications I was originally aiming for. Overall my experience at Randor Jewellery was great! I definitely recommend checking them out if you are looking for an engagement ring or even other jewellery/watches.read more
Boroka Bo
Boroka Bo
18:07 06 Jun 19
In the market for a custom ring but scared because you are a discerning customer (aka a perfectionist)? Have no fear,... Randor is the best! Just picked up 2 rings, ordered a few weeks ago, made to my exact specifications. Great workmanship, listened to and completely honored my artistic vision for both pieces. Highly recommend, will be back!read more
Denis dca
Denis dca
00:12 04 Jun 19
Thank you to Randy for taking the time to help us find the perfect ring! He took the time to explain what quality I... should be looking for and kept in constant communication once I placed the order to keep me updated on the status of the ring! My wife absolutely loved it!!! He was even willing to hold the matching wedding band so I could come pay for it closer to our wedding date! Amazing serviceread more
Audriana Li
Audriana Li
00:19 31 May 19
I wish I could give 6 stars because our experience with Randy was so amazing. We were actually about to go with another... jeweller, but then I found the exact same diamond on Randy's website for $1,100 less. That made us decide on Randy, who offered us a much larger selection of diamonds matching our specs and budget. We ended up with a much larger, high quality diamond than we thought we could afford and somehow still came in quite a bit below our budget! We picked up my ring today and it is so beautiful and perfect, I can't stop staring at it. The entire process with Randy was straightforward and transparent. Randy was awesome at getting back to all of our emails and questions, he was patient and flexible, often meeting us a bit outside of his actual store hours to accommodate our schedule. I cannot recommend Randy enough if you are looking for a custom engagement ring or piece of jewellery.read more
Nathan W
Nathan W
20:57 12 Jun 17
Randor Jewellery was the best choice that I have made. Randy helped me customize the perfect ring within my budget. I... was browsing many jewelers, but as soon as I went to the appointment with Randy I was sure that he was able to create the ring that I was looking for. He promptly emailed me back whenever I had questions, time was accommodated for appointments, and any changes that I needed was done without an issue. Randor has a large selection of rings with many styles to choose from, so when I decided that I needed styles from different rings, Randy made sure that it would look flawless.My fiance is in love with the ring, and I know that I made the best possible choice with Randor.read more
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