Special lesson :Identification of gold

Since gold is a soft metal, it's often combined with other harder metals when it's used in jewelry to provide durability. Gold jewelry is measured in 24 parts, called karats (K), to indicate how much of the piece is pure gold. So, if gold is 24K, all 24 parts of the jewelry are gold.jewel shop sale lady teach us lesson about Identification of gold,she dipping and heelpopping per 10sec/1times

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