| 单词 | 刚玉 |
| 释义 | 〔amethyst〕A purple variety of corundum used as a gemstone.紫蓝色宝石：一种紫色刚玉，用作宝石〔oriental〕Relating to or designating corundum that resembles another stone in color.刚玉的：关于或表示在颜色上类似另一块石头的刚玉的〔diaspore〕A white, pearly hydrous aluminum oxide, AlO(OH), found in bauxite, corundum, and dolomite and used as a refractory and abrasive.硬水铝石，硬水铝矿：一种白色具珍珠光泽的含水氧化铝，AIO（OH），可在铝土矿、刚玉和白云石中找到，用作耐火材料和磨蚀剂〔ruby〕A deep red, translucent variety of the mineral corundum, highly valued as a precious stone.红宝石：深红色、半透明刚玉矿产，因是珍稀宝石价值很高〔corundum〕An extremely hard mineral, aluminum oxide, Al2O 3, sometimes containing iron, magnesia, or silica, that occurs in gem varieties such as ruby and sapphire and in a common black, brown, or blue form used chiefly in abrasives. 刚玉：一种极为坚硬的矿物，氧化铝，Al2O 3，有时含铁、氧化镁或硅土，存在于各种宝石中，如红宝石、蓝宝石，并且在磨蚀剂中以普通的黑色、棕色或蓝色形式出现 |
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