artificial gem

汉语翻译

例句：

1. A hard, brilliant, lead-containing glass used in making artificial gems.
   铅质玻璃用来制人造宝石的硬而耀眼的含铅玻璃
2. A small natural or artificial gem used as a bearing in a watch.
   钻石小的天然的或人造宝石，用作手表中的轴承