Iran is the fifth most important stone producing country

 

„Iran‘s natural stone industry is seeking new partners“ according to a press release by Fair Organizers Veronafiere. „Investments are planned coming to 200 million dollars in the technology sector alone in order to modernize 5,000 processing centres in the country (and) more than 500 active quarries.“ The 87,000 employees in the branch also need to update their know-how.
http://www.stone-ideas.com/2015/11/04/irans-natural-stone-branch-millions-to-invest-in-technology-and-qualification/