ダイヤモンド
daiyamondo[da̠ija̠mõ̞ndo̞]
The English word "diamond" is translated into Japanese as ダイヤモンド (daiyamondo). Wiktionary also lists ダイヤ (daiya) and 金剛石 (kongōseki).
Meaning: gemstone (noun)
Ways to say it
| Japanese | Romanization (Wiktionary) | IPA | Note |
|---|---|---|---|
| ダイヤモンド | daiyamondo | [da̠ija̠mõ̞ndo̞] (narrow) | |
| ダイヤ | daiya | [da̠ija̠] (narrow) | |
| 金剛石 | kongōseki | [kõ̞ŋɡo̞ːse̞kʲi] (narrow) | |
| ギヤマン | giyaman | historical |
The term refers to the gemstone. While ダイヤモンド is the standard loanword used in most contexts, other forms exist depending on the level of formality and the specific setting.
Which one should you use?
ダイヤモンド is the standard loanword. ダイヤ is a shortened, colloquial version that is more common in casual, everyday conversation. 金剛石 is a technical or formal term used mostly in jewelry-related or technical contexts. ギヤマン is an archaic term once used for glass or crystal and is no longer used to refer to actual diamonds.
Is there a formal and an informal way to say it?
ダイヤモンド is the standard form. ダイヤ is an informal way to say diamond. 金剛石 is a formal and technical term. ギヤマン is a historical term that is no longer in modern use for diamonds.
How do you pronounce it?
daiyamondo
Did you know?
- The term 金剛 is the Japanese translation of the Sanskrit 'vajra', a ritual weapon symbolizing both the hardness of a diamond and an irresistible force.
- The word ギヤマン is still used in the phrase ギヤマンハート to describe someone with a fragile heart that breaks easily like glass.
- The word ギヤマン is a Japanese phonetic adaptation of the Dutch word 'glans' or 'glas', rather than being related to the English word 'diamond'.
Examples in context
- このダイヤ、偽物だよ。This diamond is fake.This sentence shows how to use ダイヤ to identify a fake.Tatoeba #9176831 by small_snow, translation #2566220 by VirtuOZ
- このダイヤは本物ですか。Is this diamond real?This sentence uses ダイヤ to ask if a diamond is real.Tatoeba #223579 by bunbuku, translation #60914 by CK
- このダイヤは本物ではない。This diamond is not real.This sentence uses ダイヤ in a statement about a diamond not being real.Tatoeba #223578 by small_snow, translation #60913 by CK
- 私は美しいダイヤの指輪がほしいです。I want a beautiful diamond ring.
- 彼女はダイヤのネックレスを身につけています。She is wearing a diamond necklace.
- 28 more sentences on Tatoeba
Example conversation
Kenta and Himari are looking at jewelry in a shop window.
- 健太 Kentaあのダイヤモンド、すごく綺麗だね。Ano daiyamondo, sugoku kirei dane.That diamond is really beautiful, isn't it?
- 陽葵 Himari本当、キラキラしていて素敵！Honto, kirakira shite ite suteki!Really, it's so sparkly and lovely!
- 健太 Kenta陽葵に似合いそうなデザインだよ。Himari ni niaiso na dezain dayo.It's a design that would suit you, Himari.
- 陽葵 Himari嬉しい！でも、少し高そうだね。Ureshii! Demo, sukoshi takasou dane.I'm happy! But it looks a bit expensive.
Sources
- Wiktionary, “diamond” translations and entries ダイヤモンド, ダイヤ, 金剛石, CC BY-SA 4.0, dump of 2026-09-26.
- Example sentences: Tatoeba CC BY 2.0 FR.
