Diamondoids are diamond structured ring cycloalkane saturated hydrocarbons consisting of a number of six-member carbon rings fused together. Diamondoids are chemical compounds that are found naturally in oils but in very low concentrations. They are used as indicators of thermal maturity due to their ability to withstand high thermal maturity levels. As when the maturity reaches the oil cracking stages, the biomarker concentration decreases, while the diamondoids concentration increases due to their high thermal stability.