: Use mild soap and water to make the ring shine. Tungsten is famously scratch-resistant, so a good cleaning often makes it look brand new. How Much Is a Tungsten Ring Worth? - Redwood Rings
: Some local jewelers may buy back high-end tungsten bands if they are in excellent condition or if the brand is recognizable. However, many will only offer consignment , meaning you get paid only after they sell it to someone else.
Since local "cash for gold" shops rarely buy tungsten, you might find more success through these alternatives: