Proto-Indo-European *krus-

→ English crystal (derived)

→ Old English hruse (derived)

→ Persian رخنه (derived)

→ Finnish rouhia (derived)

→ Irish criostal (derived)

→ Ancient Greek κρούω (mention)

→ Indonesian kristal (derived)

→ Lithuanian kruša (derived)

→ Latvian krusa (inherited)

→ Portuguese cristal (mention)