• The World of Corundum

  • 2024/12/17
  • 再生時間： 4 分
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The World of Corundum

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  • Corundum, a mineral primarily composed of aluminum oxide, forms the basis of several gemstones. Trace elements within the corundum determine its color; iron or titanium create sapphires, typically blue but also found in other hues. Chromium impurities yield rubies, known for their red color. Essentially, the text explains how variations in corundum's elemental composition result in different gemstones.
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あらすじ・解説

Corundum, a mineral primarily composed of aluminum oxide, forms the basis of several gemstones. Trace elements within the corundum determine its color; iron or titanium create sapphires, typically blue but also found in other hues. Chromium impurities yield rubies, known for their red color. Essentially, the text explains how variations in corundum's elemental composition result in different gemstones.
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