The hardest mineral belongs to diamond. There are different colors of diamonds, the most famous of which are white and blue. Diamond is one of the most precious gemstones in the Middle East and has a very high value. The high value of a diamond is due to its high hardness, shiny luster, and high dispersion. 

The original locality for lapis lazuli is the Sar-e-Sang deposit in Afghanistan's remote Badakhshan district. In the Achaemenid period, azure was called "Kabutkeh". In the Sassanid period, azure was consumed a lot. The roof of Ctesiphon, as well as various sculptures, is made of azure; it is possible that they used azurite instead of azure in making these works. 

Although Iran has lost its good position in the past, it still can return today. Given the ability of Iran in the Middle East to cut and prepare the brilliant, in support of the private sector capital investment in the sector. It can be from African countries and with the cutting of stones on it, Iran is the Middle East's diamond exchange.

In 2010, US Pentagon officials, along with US geologists, uncovered approximately $ 1 trillion in untapped mineral reserves in Afghanistan. A Pentagon note says Afghanistan could become Saudi Arabia's lithium. Some believe that intact minerals are worth up to $ 3 trillion.