Lab-grown diamonds are grown in a lab by scientists. As a result, they are chemically and physically identical to natural diamonds and are the same on the hardness scale. In comparison, mined diamonds are found in nature and take billions of years to grow, while lab-grown diamonds can be grown in just a few weeks. 

Lab-grown, also known as synthetic diamonds, have the same brilliance, sparkle, and mineral properties as top-tier mined diamonds and can only be distinguished with tests using specialized equipment.