名词
中文翻译：宝石
同义词：
['sardonyx', 'quartzite']
例句：
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1. The geode is a beautiful piece of jewelry that has been polished to a high shine.
这块宝石是一块美丽的珠宝，经过打磨后闪耀着高光泽。
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2. The geode was found in the riverbed and has been studied for its mineral content.
这块石英晶体在河床中发现，已被研究其矿物成分。
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3. The geode is often used as a decorative item in ancient civilizations.
这块石英晶体常被古代文明用作装饰品。