What the Bible says about Creation by Fiat
(From Forerunner Commentary)
This passage deals with an unusual being of great beauty who was in the Garden of Eden. Precious stones are part of his covering, which probably means they were part of the clothing that adorned him. This being is a created being, not one who was born. In addition to that, he is—or was—full of wisdom and perfect in beauty. Obviously, God is not speaking of a human being. This personage was the sum total of all that God could create by fiat and put into a living being. In verse 14, He identifies him more clearly.
John W. Ritenbaugh
Satan (Part 1)