The term “720” in gold jewelry means the item has 720 parts of pure gold per 1000, or 72% purity. This is part of the karat system. Pure gold is soft, so it’s often mixed with other metals for strength. An example is 18-karat gold, which has 750 parts of pure gold, or 75% purity.
To identify 720 gold jewelry, look for specific gold marks. Jewelry manufacturers often stamp their pieces with numbers indicating purity, such as “720” or “18K.” These numbers will usually be located in inconspicuous areas, like the clasp or inside a ring. A jeweler’s loupe can help you examine these markings closely.
Additionally, an acid test can confirm the gold content. This test involves applying a small drop of acid to a scratch made on the piece. The color that develops will indicate the purity level.
Understanding 720 gold jewelry allows you to make informed purchasing decisions. Now that you know the significance of gold purity and identification marks, we can explore the care and maintenance of your gold jewelry to preserve its beauty and value.