Au750 refers to an alloy containing 75% الذهب و 25% المعادن الأخرى, commonly known as 18K gold. Usually used to make jewelry, the mark is G18K, G750 or Au750 "where G is the meaning of gold content". 24k gold is often considered pure gold, ولكن محتوى الذهب الفعلي هو 99.98%. The purity of [...]
