美玉的英文：
gem

The price of this gem is expensive.
这个宝石的价格十分昂贵。

This picture is the gem of the collection.
这幅画是收藏的珍品。

Gem topaz is valuable.
黄水晶宝石价值不菲。

This picture is the gem(ie the best) of the collection.
这幅画是收藏的珍品.

Miss Famous, as she was called, was a gem.
“知名小姐”人如其名，是个尤物。