Complex sentence: The Mistress of the Copper Mountain is depicted as an extremely beautiful young woman with green eyes, dark braided hair and ribbons from thin tinkling copper, and her gown is made from malachite.
Split into simpler sentences: The Mistress of the Copper Mountain has the appearance of an extremely beautiful young woman with green eyes. Some of her more distinctive features include dark braided hair, ribbons from thin tinkling copper, and a gown that is made from malachite.