XAU/USD is the price of one troy ounce of gold expressed in US dollars. “XAU” is the international code for gold, and the quote shows how many dollars one ounce costs. Gold prices respond mainly to real interest rates, the strength of the US dollar, central bank buying, investment flows and geopolitical risk. Trading gold through leveraged CFDs adds volatility, gap and margin risk.
Key takeaways
- XAU/USD quotes gold per troy ounce (31.1035 grams) in US dollars.
- The LBMA Gold Price, set in two daily auctions in London, is the main global benchmark for physical gold.
- Real yields, the US dollar, central bank demand and ETF flows are among the most closely watched drivers.
- Total gold demand exceeded 5,000 tonnes in 2025 for the first time, according to the World Gold Council.
What Does XAU/USD Mean?
“XAU” comes from the ISO 4217 currency code system, where precious metals have their own codes. The “X” marks a non-national unit and “AU” comes from aurum, the Latin word for gold. Silver, for comparison, is XAG.
XAU/USD works like a currency pair. Gold is the base and the US dollar is the quote. A price of 2,500.00 means one troy ounce of gold costs 2,500 US dollars. If XAU/USD rises, gold is becoming more expensive in dollar terms. If it falls, gold is becoming cheaper, or the dollar is strengthening, or both.
A troy ounce is the traditional unit for precious metals and equals 31.1034768 grams. It is heavier than the everyday “avoirdupois” ounce of 28.35 grams, which is a common source of confusion.
On many trading platforms, including CMS Prime’s, gold appears under a symbol such as GOLD or XAUUSD within the commodities offering.
How Gold Is Priced
Gold does not trade on a single central exchange. Its price comes from a network of markets that overlap around the clock.
The London over-the-counter market and the LBMA Gold Price
London is the centre of the wholesale physical gold market. Twice each business day, at 10:30 and 15:00 London time, ICE Benchmark Administration runs electronic auctions that produce the LBMA Gold Price AM and PM. These benchmarks are set in US dollars per troy ounce and are used by producers, refiners, central banks and funds as reference prices.
Futures markets
Gold futures, most notably on COMEX in New York, trade nearly 24 hours a day. They add price discovery during US hours and reflect expectations about future delivery.
Spot and CFD prices
The live spot price seen on trading platforms reflects continuous dealing between banks and liquidity providers. A gold CFD tracks that price without transferring ownership of physical metal. For a detailed explanation of how gold connects to other asset classes, see CMS Prime’s guide to gold, oil and forex correlation.
Local prices in the UAE
Retail gold prices in Dubai are usually quoted in UAE dirhams per gram and by purity, such as 24K or 22K. These are derived from the international dollar price, then converted at the dirham’s fixed peg to the US dollar and adjusted for purity, making charges and dealer margins. As a result, retail jewellery prices differ from the XAU/USD quote on a trading screen.
What Moves the Price of Gold?
Gold has no earnings or coupon, so its price depends on how attractive holding it is compared with alternatives, and on physical supply and demand.
|
Driver |
How it usually affects XAU/USD |
Why |
|
Real interest rates |
Rising real yields often weigh on gold; falling real yields often support it |
Gold pays no interest, so higher inflation-adjusted yields raise the cost of holding it |
|
US dollar strength |
A stronger dollar often weighs on gold; a weaker dollar often supports it |
Gold is priced in dollars, so it becomes more expensive for non-US buyers when the dollar rises |
|
Central bank demand |
Sustained buying can support prices |
Official sector purchases absorb a significant share of annual supply |
|
ETF and investment flows |
Inflows can support prices; outflows can weigh on them |
Gold-backed ETFs hold physical metal to match investor demand |
|
Geopolitical and financial stress |
Stress often increases demand |
Gold is widely held as a store of value during uncertainty |
|
Inflation expectations |
Higher expected inflation can support gold |
Some investors hold gold to preserve purchasing power |
|
Jewellery and physical demand |
Strong consumer demand can support prices; high prices can reduce volumes |
India and China are the largest consumer markets |
These relationships are tendencies, not rules. They can weaken or reverse for long periods.
Real yields and central banks
Real yields, meaning interest rates minus expected inflation, have historically been among gold’s most important influences. Central bank policy shapes those yields, which is why Federal Reserve meetings often move XAU/USD sharply. CMS Prime’s article on interest rate cycles explains how rate changes flow across markets.
The US dollar and the DXY
Because gold is priced in dollars, the US Dollar Index (DXY) is a common companion chart. A rising DXY frequently coincides with a softer gold price, though both can rise together during periods of broad stress.
Official and investment demand
The World Gold Council’s full-year 2025 report found that total demand, including over-the-counter activity, reached about 5,002 tonnes. Central banks bought around 863 tonnes, and global gold ETF holdings grew by about 801 tonnes. Jewellery volumes fell 18% as prices rose, even though the value of jewellery demand reached a record.
Uncertainty and safe-haven demand
During geopolitical tension or financial stress, gold often attracts demand as a store of value. This behaviour is covered in trading gold during economic uncertainty. The article on gold vs Bitcoin during inflation compares gold with another asset sometimes described as a store of value.
When Is Gold Most Active?
XAU/USD trades almost 24 hours a day from Monday to Friday, with a short daily break on most platforms. Activity usually increases during the London session and peaks when London and New York overlap. In UAE time, that overlap generally falls between about 16:00 and 20:00 from March to October, and 17:00 to 21:00 in winter.
US data releases, such as inflation, jobs figures and Federal Reserve decisions, often create the largest intraday moves. The CMS Prime economic calendar lists these events and their timing.
Key Risks of Trading XAU/USD
Gold is widely followed, but trading it through leveraged products carries clear risks.
- Volatility. Gold can move tens of dollars in minutes around data releases, which is large relative to typical margin levels.
- Leverage. CFDs amplify both gains and losses. A modest move against a position can use up available margin quickly. Key margin terms are defined in CMS Prime’s glossary.
- Gaps. Weekend news can cause the opening price to differ sharply from the previous close.
- Overnight costs. Positions held past the daily rollover can incur swap charges, shown in each symbol’s specification on MetaTrader 5.
- Changing correlations. Links with the dollar, yields and equities are not fixed and can break during specific events.
- Spread widening. Spreads can widen during low liquidity, such as holidays or the daily rollover.
XAU/USD on CMS Prime
CMS Prime offers gold as a CFD alongside silver, oil and other commodities on MT4 and MT5. Contract size, margin requirements, trading hours and swap rates are listed in each symbol’s specification and can vary by account type. CMS Prime’s guide to beginner commodity trading mistakes outlines common pitfalls that new traders face with metals.
Frequently Asked Questions
What does XAU stand for? XAU is the ISO 4217 code for gold. “X” indicates a unit that is not tied to a single country, and “AU” comes from aurum, the Latin word for gold. XAU/USD therefore means the price of one troy ounce of gold in US dollars.
How many grams are in a troy ounce of gold? One troy ounce equals 31.1034768 grams. It is heavier than the standard ounce used for everyday goods, which is about 28.35 grams. Gold, silver, platinum and palladium prices are quoted per troy ounce in international markets.
Why does gold often fall when the US dollar rises? Gold is priced in US dollars. When the dollar strengthens, gold costs more for buyers using other currencies, which can reduce demand. A stronger dollar is also often linked to higher US yields, which increase the opportunity cost of holding gold.
What is the LBMA Gold Price? The LBMA Gold Price is the main global benchmark for physical gold. It is set in two electronic auctions each London business day, at 10:30 and 15:00, administered by ICE Benchmark Administration, and published in US dollars per troy ounce.
Is trading gold CFDs the same as owning gold? No. A gold CFD tracks the price of gold but does not give ownership of physical metal. Traders can take positions on rising or falling prices with leverage, which increases risk, and positions held overnight may incur swap charges.
Why is the gold price in Dubai different from XAU/USD? Retail prices in Dubai are usually quoted per gram in dirhams and by karat. They start from the international dollar price, then reflect currency conversion, purity, making charges and retailer margins. As a result, they differ from the ounce-based spot quote on trading platforms.
Conclusion
XAU/USD is the dollar price of one troy ounce of gold, and it is one of the most closely followed prices in global markets. The LBMA auctions in London set the main physical benchmark, while futures and spot markets keep prices moving around the clock. Real yields, the US dollar, central bank buying, ETF flows and geopolitical risk explain most of gold’s larger moves, though none of these relationships is fixed. CMS Prime’s commodities page, economic calendar and MT4/MT5 platforms offer a starting point for studying gold price behaviour.
Risk warning: Trading in financial instruments such as Forex, CFDs, and derivatives involves a high level of risk and may not be suitable for all investors. Past performance is not indicative of future results.
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