Then again, perhaps I spoke too soon. Quote from a recent Forbes magazine article:
"A new Apple patent has surfaced for a “Method and Apparatus for forming a gold metal matrix composite.” In simple terms, this new “Apple gold” is lighter, stronger and more scratch-resistant than ordinary 18 karat gold through alloys of low-density ceramic particles instead of precious metals. It also contains roughly half the amount of pure 24 karat gold as ordinary 18 karat gold (which is 75% gold, 15% silver, and 10% copper). "
