quick sketch
"Concerning the Three Rings Sauron could learn nothing from Celebrimbor; and he had him put to death. But he guessed the truth, that the Three had been committed to Elvish guardians: and that must mean to Galadriel and Gil-galad.
In black anger he turned back to battle; and bearing as a banner Celebrimbor's body hung upon a pole, shot through with Orc-arrows, he turned upon the forces of Elrond."
The death of Celebrimbor (my love for doomed Noldor is resurfacing in strength)