Where these figures actually come from
Where this platform's reference prices, exchange rates and historical data come from, and how each figure is classified. Every reference price and rate on this platform already states its own source and observation time on the card or result panel that shows it — this page collects that same information in one place, plus the licensing terms this platform has actually confirmed with each provider.
Current Gold and Silver reference prices
When a verified current Gold (XAU) or Silver (XAG) reference price is shown, it is supplied by Metals.Dev, a commercial market-data aggregator. This platform caches each observation for a short, bounded window rather than fetching on every page view; the provider's own licence terms permit that caching but do not permit durably storing the rates themselves, so no historical chart on this platform is ever built from this source (see below). Attribution on individual price cards is not contractually required, which is why cards on this platform use a generic "Platform Reference" label instead of naming the provider directly — this page names it instead, voluntarily.
A figure sourced this way is never presented as a live tradable quote, a specific dealer's price, or a local jeweller/sarafa rate — it is a reference observation, clearly labelled as such, with its real observation and last-verified time shown alongside it. When no verified observation is available, this platform says so plainly rather than showing an estimated, rounded, or previously-cached figure.
Currency conversion
Euro exchange rates are the European Central Bank (ECB) euro foreign exchange reference rates, published once each business day and ingested daily. For currencies the ECB does not publish, this platform uses the currency table that arrives as part of the same Metals.Dev market-data snapshot described above — held only in the same short-lived cache, never stored durably. Every converted figure on this platform states which of the two it actually used.
Historical data
The historical Gold and Silver chart on this platform is built from the World Bank Commodity Price Data ("Pink Sheet"), Monthly Prices, licensed CC-BY-4.0. It is a monthly-average dataset, not a daily or intraday series, which is why that chart's own monthly figures are labelled monthly averages rather than a day's price. Every stored row records its own provider, licence and period alongside the price.
A separate feature, the Historical Price Lookup, answers a different question: what a Gold or Silver benchmark was worth, in a specific country's currency, for a specific past year. For that feature this platform computes one figure per year — the mean of that year's verified Pink Sheet monthly observations, converted (outside the United States, whose benchmark already needs no currency conversion) using the World Bank World Development Indicators (WDI) official annual-average exchange rate for that same historical year, also licensed CC-BY-4.0 — never today's exchange rate, and never a different year's rate. Every such figure is labelled a benchmark-derived annual average: not a monthly series, not a daily or intraday price, and not a historical local jeweller or retail quote. When a verified metal observation or historical exchange rate is not available for the requested year, this platform says so rather than estimating a figure in its place.
How a figure is classified
Reference is a provider's own observation, unmodified, in its own quoted unit and currency. Calculated Reference is that same observation after a currency conversion, a unit conversion, or both, with every input stated. Historical names a backward-looking monthly record, never a current price. Stale means an observation exists but is older than this platform's freshness policy allows, so no current value is shown from it. Unavailable means no verified figure could be read right now — this platform never substitutes a guessed, rounded, or previously-cached number for a missing one. No page on this platform describes any figure as live: that word is reserved for an intraday tradable tick, which none of these sources provide.