Just use this platinum-gold nanocrystalline alloy with wear “comparable to diamond-like carbon (DLC) and sapphire” https://onlinelibrary.wiley.com/doi/full/10.1

Just use this platinum-gold nanocrystalline alloy with wear “comparable to diamond-like carbon (DLC) and sapphire” https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201802026 https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201802... Or more plausibly, this titanium–gold alloy 4x as hard as steel, https://www.science.org/doi/10.1126/sciadv.1600319 https://www.science.org/doi/10.1126/sciadv.1600319