κρυσταλλίζω krystallízō

Meaning

to make (i.e. intransitively, resemble) ice ("crystallize")

In the King James Version: be clear as crystal

Derivation: from G2930 (κρύσταλλος);

Where it is used

• Revelation 21:11 shining with the glory of God. Its radiance was like a most precious jewel, like a jasper, as clear as crystal.