then did he unloose the necklace , and he gazed in wonder at it- and beheld the silmaril , even the jewel he won from angband and gained undying glory by his deed ; and he said : `` never have mine eyes beheld thee o lamp of faery burn one half so fair as now thou dost , set in gold and gems and the magic of the dwarves '' ; and that necklace he caused to be washed of its stains , and he cast it not away , knowing nought of its power , but bore it with him back into the woods of hithlum .