金剛

1. Origins, structure, and basic meaning

• Structure: 金剛(こんごう) refers to diamond or something extremely hard and can symbolize firmness.
• Basic usage: It is used for a jewel's hardness in a story or unwavering resolve.

2. Common pitfalls and similar expressions

• The jewel's portrayal in a story
  • 砕けない宝石として描かれている means portrayed as an unbreakable jewel, conveying how it is presented in the story.
• を and に in a comparison
  • In 決意を金剛にたとえた, を marks the resolve being described and に marks the diamond it is compared to.