human
Can you tell me what is the difference between a man-made diamond and a natural diamond?
assistant
Man-made diamonds are created by scientists using a process called high pressure, high temperature (HPHT) that creates an artificial crystal lattice structure. Natural diamonds are formed over millions of years in the Earth's crust through a process called carbonatite metamorphism. The two types of diamonds have different physical properties and chemical compositions, but they are both considered precious stones due to their rarity and beauty.