Old English glisnian "to glisten, gleam," from Proto-Germanic *glis- (source also of Old English glisian "to glitter, shine," Old Frisian glisa "to shine," Middle High German glistern "to sparkle," Old Danish glisse "to shine"), from PIE root *ghel- (2) "to shine," with derivatives referring to bright materials and gold. Related: Glistened; glistening.
<a href="https://www.etymonline.com/word/glistening">Etymology of glistening by etymonline</a>
Harper, D. (n.d.). Etymology of glistening. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/glistening