What are mined or otherwise called natural diamonds?

A mined diamond or a natural diamond is a one that naturally forms over billions of years when carbon deposits deep below the earth’s surface are exposed to high temperatures and pressure causing carbon atoms to bond together slowly forming a crystal. These diamonds can only be mined when rare volcanoes erupt and bring them close to the surface, called kimberlite eruptions. The definition of a diamond is a precious stone consisting of a clear and colorless crystalline form of pure carbon, which is the hardest naturally occurring substance.

Comparing Lab and Mined Diamonds

Lab-grown diamonds have the same physical and chemical properties as mined diamonds, which means they are just as hard and just as durable.

The only difference is subtle differences in the trace elements found within the diamond. It takes specialized equipment to identify a mined from a lab-grown diamond. According to GIA, a trained gemologist with 10x magnification cannot tell the difference between a mined and lab grown diamond.