How to say "diamond" in Japanese
Choosing the right word
- nounThe direct loanword for the gemstone itself — diamond as a jewel or mineral. Use it when talking about jewelry, rings, or the stone's brilliance and value.
- nounThe abbreviation of ダイヤモンド, covering the same gemstone sense. It refers to the jewel just as the full word does, simply in shortened form.
- 金剛こんごうnounA word for vajra, the indestructible substance; its 'diamond' sense treats the stone as adamantine — unbreakable — rather than a jewel to wear. For the gem itself, use ダイヤモンド.
- 内野ないやnounThe baseball term for the infield; 'diamond' here is the baseball diamond — the infield — not the gemstone. It is never a way to refer to the jewel.
Use 「ダイヤモンド」, or its abbreviation 「ダイヤ」, for the gemstone; 金剛 is a Buddhist term for the indestructible substance vajra rather than the jewel itself; 内野 is the baseball infield, the 'diamond' of the ballpark.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
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