通常蓝宝石泛指蓝色的刚玉，其它颜色的刚玉则通常用其颜色来描述，如黄色蓝宝石、绿色蓝宝石等。
But in general , sapphire only refers to blue corundum . Other color corundum often named by their colors : yellow sapphire , green sapphire etc.
绿色蓝宝石