Romance Languages:
* Spanish: Diamante
* French: Diamant
* Italian: Diamante
* Portuguese: Diamante
* Romanian: Diamant
Germanic Languages:
* German: Diamant
* Dutch: Diamant
* Swedish: Diamant
* Norwegian: Diamant
* Danish: Diamant
* English: Diamond
Slavic Languages:
* Russian: Алмаз (Almaz)
* Polish: Diament
* Czech: Diamant
* Ukrainian: Діамант (Diamanт)
Other Languages:
* Chinese: 钻石 (zuàn shí)
* Japanese: ダイヤモンド (daiyamondo)
* Korean: 다이아몬드 (daiamondeu)
* Arabic: الماس (al-mās)
* Hindi: हीरा (hīrā)
* Greek: Διαμάντι (Diamanti)
* Turkish: Elmas
This list is not exhaustive, but it gives you a good starting point.