'Diadem' in the Bible

I put on righteousness, and it clothed me. My justice was as a robe and a diadem.

In that day, Yahweh of Armies will become a crown of glory, and a diadem of beauty, to the residue of his people;

You shall also be a crown of beauty in the hand of Yahweh, and a royal diadem in the hand of your God.