Blackstone, an American alternative investment management company, completed the acquisition of International Gemological Institute, a diamond, colored stone, and jewelry certification organization, from Fosun, a Chinese multinational conglomerate holding company. Financial terms were not disclosed. "IGI has spearheaded the certification of natural diamonds, lab-grown diamonds, and colored stones, becoming a global market leader and providing confidence to manufacturers, retailers, and consumers around the world. We are bringing the best of Blackstone to the business – our operational expertise, capabilities in technology, and global track record in building successful businesses to help the company expand its global footprint," Mukesh Mehta, Blackstone Senior Managing Director.