Miley Cyrus' new ring is a thing of beauty! The Flowers singer debuted a noticeable new gem on a certain finger at the Avatar: Fire and Ash premiere on Monday... an engagement ring given to her by now-fiancé Maxx Morando! In pics from the star-studded event, she and the music producer posed on the red carpet with BEAMING expressions as Miley showed off her new bling. Ch-ch-check it out! (c) MEGA/WENN So, exactly how much did the thing set Maxx back? Experts are weighing in! Related: Sienna Miller Is Pregnant With Baby No.