金こん剛ごう石せきこんごうせきMeanings1noundiamondRefers to the gemstone or mineral diamond. More formal or literary than the common loanword ダイヤモンド.金こん剛ごう石せきは自し然ぜん界かいで最もっとも硬かたい物ぶっ質しつの一ひとつです。Diamond is one of the hardest substances in nature.この指ゆび輪わには
