a crystalline rock that can be cut and polished for jewelry; "he had the gem set in a ring for his wife"; "she had jewels made of all the rarest stones" 同义词：gem, stone,
A gemstone or gem (also called a precious or semi-precious stone, a fine gem, or jewel) is a piece of mineral, which, in cut and polished form, is used to make jewelry or other adornments.The Oxford Dictionary Online and Webster Online Dictionary However certain rocks (such as lapis lazuli), or organic materials that are not minerals (such as amber or jet), are also used for jewelry, and are therefore often considered to be gemstones as well.
例句与用法
1.
From ancient times supernatural powers have been attributed by astrologers to certain gemstones . 在古代星卜家认为超自然的力量是由某种宝石造成的。
2.
A new recorder of fancy color calcite gemstone cutting 艳色方解石晶体加工的突破
3.
Aquamarine is a fascinatingly beautiful gemstone 海蓝宝石是很有趣且迷人的宝石。
4.
Progress of optimizing treatment for gemstone 有关宝石优化处理技术的若干进展
5.
Experiment study and identification of combined gemstones 拼合宝石的试验研究及其鉴别
6.
Home : consumer information : jewelry and gemstones 这个类别的其它语文版本：
7.
The colour of this gemstone is pure seduction 的颜色是极为诱惑人的。
8.
Tourmalines are the most colourful gemstone group 在彩色宝石界，碧玺可称为最色彩缤纷的。
9.
Tanzanite is an extraordinary gemstone 坦桑石是非常独特珍奇的宝石。
10.
Evolution and development of gemstone gut 宝石加工方法的演变和发展
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