Lab-Grown Diamonds are man-made, by simulating natural conditions of extreme heat and extreme pressure (HPHT). Both mined and lab-grown diamonds are identical in chemical, optical and physical composition.
Diamonds were first created in a lab in the 1950s. However, they weren’t gem-quality diamonds that could be used in jewellery. Over the past few decades, the process has been perfected, however only really since around early 2010 has it been possible to produce large, white, gem-quality diamonds that meet or surpass natural diamonds in terms of desirability.