Strong's Greek #5458
φωστὴρ

φωστὴρ phōstēr — 1 Occurrence

Revelation 21:11 - N-NMS
GRK: θεοῦ ὁ φωστὴρ αὐτῆς ὅμοιος
NAS: of God. Her brilliance was like
KJV: and her light [was] like unto a stone
INT: of God the radiance of it [was] like