The most important natural resource to the country's economy is oil. Having the fourth largest oil reserve in the world, it is no wonder how the UAE started as one of the world's biggest producers in the oil market. Other than oil, the country also has fish, nitrogen-rich minerals (used in fertilizers), quarried stone (decor), chromium (used in stainless steel), lime, and gypsum. Although these resources are relatively high in value, the low amount of resources can not compete to what some of the Western countries have. For example, fish is found world-wide, so, internationally, it would be hard for the fishers in the UAE to compete with competitors on the global market. This can also cause problems when the oil reserve runs dry, an the country no longer has the oil to sustain their economy.