Genuine diamonds are attractive for not just their carbon content but also their scarcity and formation period. A natural diamond forms deep inside the earth; it requires certain conditions and eruptions to get the minerals to the surface. A natural diamond is as unique as snowflakes because no two diamonds can ever be identical. The appeal of natural diamonds to many people lies in their rarity and singularity. Indeed, every natural diamond owes much of its romantic character and worth to its mineral composition.