Decode the symbol
Course context: This lesson belongs to a practical beginner curriculum for Pakistan.
| Part | Meaning | Practical reading |
|---|---|---|
| X | Non-national/special code prefix in ISO currency coding | The unit is not a country currency |
| AU | Chemical symbol for gold | From Latin aurum |
| XAU | One troy ounce of gold as the standard unit | Base unit in the pair |
| USD | United States dollar | Quote currency |
| XAUUSD 2,350 | One troy ounce quoted at USD 2,350 | Market quote, not broker contract size |
Troy ounce versus everyday ounce
Precious metals use the troy system. One troy ounce is approximately 31.1035 grams, heavier than an avoirdupois ounce (about 28.35 grams). Converting a gold price into price per gram requires dividing the per‑troy‑ounce quote by approximately 31.1035.
Code versus CFD contract
| Concept | Unit |
|---|---|
| ISO XAU unit | One troy ounce of gold |
| XAUUSD quote | USD per one troy ounce |
| Exness XAUUSD contract | 100 troy ounces per standard lot |
| Exness 0.01 lot | One nominal troy ounce of CFD exposure |
| Ownership | A CFD does not deliver the underlying ounce |
Other metal codes
The same ISO framework uses XAG for silver, XPT for platinum and XPD for palladium. The code identifies the standardized precious-metal unit; a broker symbol may add a quote currency, suffix or product variant that changes contract conditions.
Common misunderstandings
- XAU is not a gold-mining company ticker in the XAUUSD pair.
- The ISO unit does not mean the CFD trader owns an ounce.
- One quoted ounce is not the same as one broker lot.
- XAUUSD and XAUUSD247 are separate instruments despite sharing the XAU code.
- Gold price per gram must be converted from the troy-ounce quote.
References
ISO 4217 standard scope, including precious metals · Exness XAUUSD contract specification
Questions from a first-time learner
What does XAU stand for?
It is the ISO 4217 code for one troy ounce of gold; AU is gold’s chemical symbol.
What does XAUUSD show?
The number of US dollars quoted for one troy ounce of gold.
Is one XAUUSD lot one ounce?
No. The current Exness contract is 100 troy ounces per lot.
Does buying XAUUSD deliver gold?
No. Exness XAUUSD is a CFD without ownership or delivery of bullion.