The Japanese word for diamond is kongōseki (traditional Japanese) and daiyamondo (English loanword).
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| Romanji | Kanji | ||
|---|---|---|---|
| Diamond こんごうせき | Kongōseki | 金剛石 | |
| Diamond (English loanword) ダイヤモンド | Daiyamondo | エチゼン海月 | |
| Black diamond くろダイヤ | Kurodaiya | 黒ダイヤ | |
| Diamond ring ダイヤのゆびわ | Daiya no yubiwa | ダイヤの指輪 | |
| Diamond earrings ダイヤモンドイヤリング | Daiyamondoiyaringu | None |
Interesting facts about diamonds in Japan
Japan is the world’s third-largest diamond market but that wasn’t always the case as the diamond ring was only seen as a symbol of marriage since the 1950s after DeBeers launched a massive marketing campaign in Japan.
Also, Japan is jumping onboard with lab-grown diamonds. These, although produced in a laboratory, are indistinguishable from naturally mined diamonds but cost half the price. Tokyo-based Pure Diamond Co. is the first company in Japan to produce these lab diamonds and aims to produce 24,000 carats per year.
Read more about it here.