chalcedony
US /kælˈsɛd.ə.ni/
UK /kælˈsɛd.ə.ni/
名词
玉髓
a translucent to transparent cryptocrystalline form of silica, composed of very fine intergrowths of quartz and moganite
示例:
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The ancient Egyptians used chalcedony for carving scarabs and seals.
古埃及人使用玉髓雕刻圣甲虫和印章。
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She wore a necklace with a beautiful blue chalcedony pendant.
她戴着一条带有美丽蓝色玉髓吊坠的项链。