Gold hallmark numbers Every hallmarked gold jewellery piece has four vital components that signify its purity. Therefore, 24 carat rating is a pure pure gold or platinum. You may have noticed them while admiring a beautiful piece of gold jewelry; usually, they are small numbers, letters or symbols discreetly hidden on the jewel’s underside or clasp. It is said that gold hallmarks will vary depending on the country where you live, but the hallmarks can help you in identifying the purity of gold. 10K, 14K, 18K, 22K, 24K: “750” for 18K gold) along with a star and number identifying the province or maker. Apr 25, 2025 · Here’s a clear explanation of the 20-karat hallmark, how it fits into the gold purity chart, and why it matters when selling gold jewellery. The jeweler’s identification mark or number will also be there on the item. 585: This means the item is 14 carat gold, which is 58. g. The “750” marking indicates that the piece contains 75% pure gold, also referred to as 18-karat gold.
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