蓝宝石：九月诞生石拥有多种色彩

蓝宝石是九月的诞生石，其典型的蓝色源于晶体结构中微量的钛和铁。尽管以蓝色闻名，但这种宝石实际上拥有多种颜色。

Sapphire, the September birthstone, is typically blue, the color caused by small amounts of titanium and iron in the crystal structure. The post Sapphire: September birthstone comes in many colors first appeared on EarthSky .