The Collaborative International Dictionary
                    Glitteringly
                    
                        
                
                                                                    Glitteringly \Glit"ter*ing*ly\, adv. In a glittering manner.
Wiktionary
                    glitteringly
                    
                        
                
                                                                    adv. In a glittering manner.
Usage examples of "glitteringly".
The beast was surmounted by a glitteringly black and silver cupola whose bulbously filigreed windows gave no hint of who or what might be inside.
Like a reverse cascade in slow motion, they lifted and gathered themselves together, a myriad of sparkling shards moving upward, fountaining glitteringly toward the empty window casement eighty feet above.