10k, 14k and 18k will all have better durability than 24k plating of the same thickness.
<b>Details</b>
Gold is gold, and it is as hard as it is. 24k gold is too malleable for anything other than plating. In plating, the thing that matters is the thickness in the plate. For the most part, that information is not available to us. Studies have shown that with all things being equal, the gold content of an alloy does not seem to affect its durability.What really matters in karated gold are the alloy materials and their percentages of the alloy. The three most common and abundant alloy materials you find in karated gold are silver, copper, and nickel. (There are other metals in small and even trace amounts.) Among these three metals, nickel is the toughest and also the hardest (it's also only used in white gold), followed by copper, and then silver. With these two alloy materials, it is possible to make an 18K alloy as hard as 10K alloy.