Methodology and data source
Where the prices come from
All spot prices for gold, silver, platinum and palladium come from MetalflowAPI, a precious-metals price service. Prices are quoted per troy ounce in EUR, USD and GBP. Other currencies (CHF, PLN, SEK, DKK, NOK, CZK, HUF) are converted from the euro price using the European Central Bank reference rate.
Update frequency
Our server caches prices for up to 10 minutes when all four metals load, and for one minute if only some do. Open pages re-check every 30 seconds. If the data source is temporarily unavailable we show the last good price for up to 24 hours, marked as stale, and never display a price of zero. Price history charts use daily closing prices and are refreshed hourly.
Purity maths
Price per gram of pure metal = spot price per troy ounce ÷ 31.1034768. Value of an item = net weight in grams × fineness × price per gram. The buy offer is that melt value × the payout percentage you choose. Fineness values used for gold:
- 24k (999): 0.999
- 23k (958): 0.958
- 22k (916): 0.9167
- 21k (875): 0.875
- 20k (833): 0.833
- 19.2k (800): 0.8
- 18k (750): 0.75
- 16k (667): 0.667
- 15k (625): 0.625
- 14k (585): 0.585
- 12k (500): 0.5
- 10k (417): 0.417
- 9k (375): 0.375
- 8k (333): 0.333
Disclaimer
All figures are indicative values only. Dealers’ offers vary with their margin, testing results, lot size and market movements during the day. Nothing on this site is financial advice or an offer to buy. Questions? Contact us.