Although Antwerp, Belgium, is recognized as the world’s diamond market center, the majority of rough diamonds are mined in Russia or Africa. Surat, India, is a lesser-known gem hub 150 miles north of Mumbai, where 90% of the world’s diamonds are cut. https://www.constructionworld.in/latest-construction-news/real-estate-news/world-s-largest-office-building-opens-in-india-s-diamond-hub/42623
