Effulgence
/ɪˈfʌldʒəns/
Definition 1 of 1
Pro Tip 1/3Literary Usage
Used mainly in literary texts like poems or novels, not in everyday conversation. 
Her eyes had an effulgence that reminded him of the stars.
Pro Tip 2/3High Intensity
Describes light with intense brightness, often overwhelming. 
The diamond's effulgence could be seen from across the room.
Pro Tip 3/3Positive Connotations
Often suggests beauty, purity, or divinity associated with the subject. 
The effulgence of her smile lit up the dreary room.