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Estimate the gold content value of an item using its weight and karat. The result is based on the available spot price and does not include jewellery or dealer costs.
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Pure gold is 24 karat. A 22k piece is 22/24 pure (about 91.7%), 18k is 75%, and 14k is 58.3%. So a jeweler's price per gram should roughly follow the table above — if you're quoted far above it, you're paying for craftsmanship, branding, or a premium you should question. Rates refresh every five minutes and are indicative, not a buy/sell quote.
Gold is commonly quoted internationally in US dollars per troy ounce. One troy ounce equals approximately 31.1034768 grams. To estimate a piece of gold jewellery, convert the spot price to a gram price, multiply by the item's weight in grams, and then multiply by its purity fraction. This gives an indicative metal value before workmanship, dealer premiums, taxes and buying or selling spreads.
Karat describes the proportion of gold in an alloy out of 24 parts. 24k is approximately 99.9% fine gold, 22k is 91.67%, 18k is 75%, and 14k is 58.33%. Other metals are mixed into lower-karat jewellery to change its strength, colour and working properties. A hallmark can help identify purity, but markings should be verified when value matters.
A calculator estimates the value of the gold content; it cannot know the exact offer a jeweller or refinery will make. Retail prices may include design, labour, brand and retail costs. A resale quote may deduct refining costs and a dealer margin. Compare more than one reputable buyer and confirm the measured weight and tested purity.
A troy ounce is approximately 31.1034768 grams. It is different from the ordinary avoirdupois ounce used for many everyday goods.
Multiply the pure-gold value for the item's weight by 18/24, or 0.75, to estimate its gold content value.
No. It estimates metal value and excludes workmanship, taxes, premiums and dealer spreads.
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To estimate the metal content of jewellery, convert its weight to grams and multiply by the gold spot price per gram and the karat fraction. For example, 18K gold is approximately 18/24, or 75%, gold by weight; 14K is approximately 58.3%. The estimate is not a guaranteed shop or resale offer.
International gold quotes are commonly shown per troy ounce. One troy ounce equals approximately 31.1035 grams. Divide the per-ounce quote by 31.1035 to estimate the price per gram, then adjust for karat and weight. Check the quote timestamp and currency before comparing prices.
The calculator estimates contained gold value only. A buyer's offer can also reflect testing, refining, workmanship, dealer margins, taxes and local market conditions. Hallmarks can help identify fineness but do not replace professional testing.
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