The company was established in 1981 in Thessaloniki, initially as modest enterprise that processed marble and manufactured fireplaces. Through hard work, specialized craftsmanship and market knowledge, the company established itself and became well-known. The first exports began in 1990 to Russia, Cyprus and Belgium. Ever since, constant developments and investments under the new name of “Marmor SG SA”, led the company to its new headquarters, a privately owned 50.000 m² plant in Kavalari Thessaloniki.
In 2004 Ioannis Antoniadis, took over the leadership of the company as President & CEO. Being inventive and with a “fresh” perception of the market evolution he organized company’s further growth through innovative business planning with constant annual turnover and profits increase. He focused on a strategic extroversion and the buildup of a global network, managing within few years to place the company among the world leaders, under the trading name "Stone Group International".