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Research on the origin and occurrence of gems and jades is one of the hottest topic in geology, gemmology and archaeology.

摘要宝玉石产来源的宝石和考古界的热门话题之一。

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hold-off, holdor, holdout, holdover, hold-over, holds, holdup, hold-up, hole, holeable,

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3G, 401(K), a,

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Some materials that are culturally prized as gems aren't minerals or gems in the strictest geological sense: things like amber, jet, coral, and pearl.

在文化意义上被视矿物,但从严格的宝石角度上它们并矿物或宝石,例如:琥珀、煤精、珊瑚和珍珠。

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The Gemological Institute of America, sometimes known as the GIA (not to be confused with the CIA – the Central Intelligence Agency) is the leading authority in gemology in the United States.

美国宝石学院,有时也 GIA(要与中央情报局 - 中央情报局混淆)是美国宝石的主要权威机构。

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holergastic, holes, holey, Holi, holibut, holiday, holiday resort, holidayer, holidaymaker, holidays,

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3G, 401(K), a,
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