Her Diamonds by Rob Thomas is in G at 90 beats per minute and runs 4:24 across 51 bars. It uses 9 chords — G, A7, Cm, D, Am7, C, Em, Am, and a few more. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? Her Diamonds guitar melody tab.