Lamentations 4:7 Her nobles were purer than snow, they were whiter than milk; They were more ruddy in body than rubies, their polishing was as of sapphire. (WEB KJV JPS ASV WBS NAS)
Ezekiel 21:11 And he giveth it for polishing, For laying hold of by the hand. It is sharpened -- the sword -- and polished, To give it into the hand of a slayer. (YLT)