jewellery designs bangles by bhima.Did you know? Carat weight can be 10, 12, 14, 18, 22, or 24. The higher the number, the greater the purity. To be called “solid gold,” gold must have a minimum weight of 10 carats. “Pure gold” must have a carat weight of 24, (though there is still a small amount of copper in it). Pure gold is so soft that it can be molded by hand.