Yes, lab-grown diamonds will test positive on diamond tests!
Just like their natural counterparts, lab-grown diamonds are made from 100% pure, crystallized carbon, which is why they will pass the same tests used to identify real diamonds. Diamond testers work by detecting the unique electrical conductivity or thermal properties of the carbon structure. Since lab-grown diamonds are chemically and physically identical to mined diamonds, they behave the same way during testing. This means that whether a diamond is grown in a lab or found in the earth, it will show up as a “real” diamond when tested.
The key point is that lab-grown diamonds are not simulants like cubic zirconia or moissanite, which may look similar but are chemically different. Lab-grown diamonds share the same hardness (10 on the Mohs scale) and brilliance as natural diamonds, making them indistinguishable by traditional diamond tests.
Why Does This Matter?
The fact that lab-grown diamonds test positive just like mined diamonds is an important feature for consumers. It reassures buyers that they are getting a true diamond—one that is just as durable, brilliant, and valuable as a natural one.
Additionally, lab-grown diamonds are an ethical and sustainable alternative to mined diamonds, offering a way to enjoy the beauty and luxury of diamonds while minimizing environmental and human rights impacts. You get the same sparkle and durability, but with the peace of mind that your diamond was created without contributing to the harms sometimes associated with traditional diamond mining.
What Should You Know Before Buying?
When shopping for a lab-grown diamond, it’s essential to buy from a trusted jeweler who can guarantee that the diamond is genuine. Lab-grown diamonds can come in different qualities and cuts, just like mined diamonds, and it’s a good idea to get a certificate of authenticity and a grading report from reputable gemological organizations.
Some sellers may offer an even higher level of transparency, including details about the diamond’s specific origin and how it was made, giving you the confidence that your purchase is exactly what you expect.