>>11836960I presume your point is that troy ounces are larger than avoirdupois ounces, and gold is measured in troy ounces when it isn't measured in grams. This falls apart, because diamonds are not customarily measured in ounces at all, but rather carats, so you can't just apply avoirdupois ounces to them.
And if you meant fluid ounces, you would have specified them. Or the feline once called "ounce".
tldr: an ounce of gold, but only by flawed reasoning.