I’m not sure the exact compound of the metals. Palladium is softer than yellow gold. Rose gold is the toughest compared to other alloy because it has copper. I’m newbie but I assume that Hermes hardware is not just a compound that makes it look like the color rose gold but is actually gold plated.Yes, I love her. But feeling a little worried when I read the previous post complaining rose gold hardware is "softer" compared to gold hardware....