It is very difficult to find natural alexandrite gemstones .

这是很难找到的天然紫翠玉宝石。

Alexandrite is looked upon as a good omen in russia .

翠绿宝石看作是在俄罗斯好兆头。

Alexandrite rings are very beautiful .

翠绿宝石戒指很漂亮。

Natural alexandrite is very rare .

天然紫翠玉是非常罕见的。

The biggest alexandrite crystal cluster was mined in russia and weighed 5724 grams .

最大的紫翠玉水晶簇是在俄罗斯开采，重5724克。