White Gold vs TUNGSTEN vs Titanium vs Platinum
From left to right: White Gold, Tungsten, Titanium, Platinum

The image above demonstrates how each metal will look in roughly 1 year from the day you put it on. As you can see all the metals have scratched BUT tungsten. This is because tungsten is one of the most durable metals known to man. This type of metal is perfect for an active person because the ring will not need to be taken off. It is rated 8.5 - 9.5 on Moh's Hardiness Scale where diamonds are a 10. Tungsten is maintenance free and will never need to be re-dipped or re-polished. It is important to note that colored tungsten i.e. black or gold, can scratch because it is plated in that color.