high-purity gold

例句：

1. 1.The high-purity gold is used in jewelry making.
   高纯度金用于珠宝制作。
2. 2.The purity of the gold was tested by the government.
   政府对黄金的纯度进行了测试。
3. 3. Gold is a precious metal that is highly valued for its rarity and beauty.
   黄金是一种稀有且美丽的贵金属，因此备受珍视。