只有红色的刚玉可称为红宝石，其他任何颜色是命名为蓝宝石。
Only red corundum is entitled to be called ruby, all other colours being classified as sapphires.
刚玉的种类包括（红宝石、星光红宝石、蓝宝石、艳色蓝宝石、星光蓝宝石）。
The variety of boule includes ruby, starlight ruby, sapphire, beautiful sapphire and starlight sapphire.
这是一颗熠熠生辉的蓝宝石。对显而易见的蓝色矿物刚玉通常称之为蓝宝石。
A sapphire, the common name for the mineral corundum in its transparent blue form, sparkles.
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.
有些正装表表把上有圆形宝石；许多女式正装手表的表面，表圈和表链上都镶有切割了的宝石。有的正装表则是镶满了蓝宝石（刚玉）。
Some dress watches have a cabochon on the crown and many women's dress watches have faceted gemstones on the face, bezel, or bracelet.
有些正装表表把上有圆形宝石；许多女式正装手表的表面，表圈和表链上都镶有切割了的宝石。有的正装表则是镶满了蓝宝石（刚玉）。
Some dress watches have a cabochon on the crown and many women's dress watches have faceted gemstones on the face, bezel, or bracelet.
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