The lower the karat, the stronger the piece. However, the lower the karat of the piece, the lower the percentage of pure gold within it. 14 karat gold is a market standard of gold alloy because it strikes a perfect balance by being robust, but still maintaining a high percentage of pure gold. This makes it strong, but still valuable. 14 karat gold still has the rich luster of pure gold, while being durable enough to maintain the shape and design of your piece.