国内市场上的优化宝石张如柏最近２～３年来，优化的红宝石蓝宝石大量进入国内市场。据统计，约有８５％的红宝石都不同程度地作过处理。自１９９２年以来，泰国市场红宝石主要来自蒙苏，并成了世界红宝石市场的主要来源。据亚洲珠宝学院研究，５０％以上的蒙苏红宝是热处... Optimization of the domestic market gems Zhang Rubai optimization of the recent 2 to 3 years, a large number of ruby ​​sapphires into the domestic market. According to statistics, about 85% of rubies have been processed to varying degrees. Since 1992, rubies from the Thai market have come mainly from Montesinos and have become the main source of the world’s ruby ​​market. According to the Asian Institute of Jewelry, more than 50% of the Mongolian ruby ​​is heat treatment ...