贵重金属 ( Precious metals )：gold，silver and platinum 宝石(Precious Stones)：diamonds，rubies and emeralds
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... precious schorl 贵电气石 precious stones(classification of) 宝石等级 pearl spar 真珠晶石 ...
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Semi-precious stones 次宝石 ; 半宝石 ; 产品
All kinds of precious stones 各类宝石
Precious stones and materials technology 宝石及材料工艺学
Rare jewels and precious stones 奇珍异宝
Precious Stones and Jade Painting 珠宝及骨刻玉雕
Precious Stones and Diamonds 产品
N-COUNT A precious stone is a valuable stone, such as a diamond or a ruby, that is used for making jewellery. 宝石
I'm not really an expert on precious stones.
我并不是真正的宝石专家。
He went to a famous jewelry shop which keeps a large stock of precious stones and asked to be shown some pearl necklaces.
他去了一家有大量宝石的著名珠宝店，要求给他看一些珍珠项链。
Semi-precious stones were used for inlay ornamentation.
准宝石的石头用来做镶嵌装饰。
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