摘要
绿柱石宝石是常见的宝石，最重要的品种是祖母绿和海兰宝石。绿柱石宝石的不同品种有不同的颜色，这种不同的颜色又与呈色离子有关，如祖母绿与铬有关，海蓝宝石与Fe2＋有关，利用颜色三角形图（图1、图2）可清楚的了解绿柱石存在的颜色和宝石间的关系。不同颜色的绿柱石宝石又与它们的生成环境（氧化或还原）条件有关。
Beryl gems are common gemstone. Their important breeds are emerald and aquamarine. The colour of diffcrent grade of beryls is different. This difference in colour deponds on the colouring ions. For example, the colour of emerald is reltion to Cr. but the colour of aquamarine is relation to Fe2+. Useing the triangular diagram of colour (Fig. 1, 2 ). we can understand this relationship clearly between the colour and gem of beryls. The difference of colour is also depond on beryl gems gems growing environment (oxidation or reduction).
