Gold Filled is not like gold plated as there is approx 100 times more gold in gold fill, than there is on plated. Gold filled looks and usually wears as well as karat gold. Often referred to as...
Pure gold has the marking "24K"Less then pure, but homogeneous alloy have markinglike "18K" "9K" "10goldfilled" etc. Plating does not andshould not have marking