| 1. | The new york museum of natural history , for example , has an exhibit in which a cup made of pure emerald which belonged to the emperor jehangir is shown next to the patricia , one of the largest colombian emerald crystals , which weighs 632 carats
祖母绿自古以来受人敬重。由于这个原因，其中最有名的祖母绿常被博物馆收藏著。以纽约自然历史博物馆为例，曾展出了一个属于 |
