natural gemstone

• 天然宝石

natural gemstone的用法和样例：

例句

1. What they use as adornments on their body fall into two kinds, gold or silver articles, or natural gemstones.
   所佩带的装饰品的质地一方面是金银物器，另一方面是天然宝石。
2. The country's volcanic activity also yields natural gems, such as boiling pools, geysers, and black-sand beaches.
   这个国家的火山是活跃的也生产天然宝石，还有沸腾的池塘，间歇泉，和黑沙海滩。