Both London Gold and Au99.99 are linked to gold prices, yet they differ in quotation units, trading mechanisms and capital requirements. London Gold is generally quoted in US dollars per troy ounce, while Au99.99 is quoted in Chinese Yuan per gram and traded under the spot physical trading rules of the Shanghai Gold Exchange (SGE).
Unify quotation units first
If London Gold is quoted at 4300 US dollars, this means 4300 US dollars per troy ounce. Au99.99 is quoted in Chinese Yuan per gram. To make valid comparisons, you need to convert figures using the exchange rate and the conversion factor of 31.1034768 grams per troy ounce.
Different trading mechanisms
Au99.99 is a spot physical product. Buyers must prepare sufficient funds in accordance with the exchange rules for trades. London Gold usually operates on a margin model, where an account uses an advance deposit to hold a larger notional contract.
Different trading hours
The Shanghai Gold Exchange has its own daytime and night trading sessions. London Gold covers multiple international market sessions and offers greater continuity on business days.
Why their prices are never identical
Exchange rates, local supply and demand, trading hours and market liquidity all create short-term price spreads. Thus, converted theoretical values are for reference only.
What you can reasonably compare
For comparing long-term price trends, you may unify the units and observe the market direction. When you are ready to trade, refer back to the live quotes and rules specific to each product.
One is quoted in USD per troy ounce, the other in CNY per gram
London Gold is commonly priced in US dollars per troy ounce, and one lot on Lucky Gold equals 100 troy ounces. SGE Au99.99 is quoted in Chinese Yuan per gram and is a domestic physical spot gold product.
If you only look at the figures on screen, one may show around 4300 while the other may be above 900, and these numbers cannot be compared directly. Comparisons are only meaningful after unit conversion via the exchange rate and 31.1034768 grams per troy ounce.
Different trading mechanisms
Au99.99 belongs to the physical spot system. Its trading and settlement rules are set by the Shanghai Gold Exchange, and its capital model differs from margined London Gold.
Even though both products track gold prices, the way trading capital is deployed in your account is not the same.
Trading hours also differ
London Gold covers major international market sessions and trades nearly around the clock on business days. Au99.99 follows the day and night session timetable of the Shanghai Gold Exchange. International markets may still move while domestic trading is closed, and new external pricing information will be reflected once domestic trading resumes.
Why temporary price divergences occur
Exchange rates, local supply and demand, trading windows and liquidity can all lead to short-term gaps. Theoretical conversion facilitates comparison but does not guarantee that the two markets will match tick for tick every minute.
Choose based on your objectives
If you want exposure to international gold prices and accept margin trading, London Gold fits this framework. If you focus on China’s domestic physical gold market, you need to study the trading and settlement rules for Au99.99. Do not decide simply based on which quote “looks cheaper”, as their quotation units and trading structures are fundamentally different.
Settlement features also shape user experience
Au99.99 sits within the domestic exchange’s physical spot framework with formal delivery arrangements. Online London Gold trading focuses more on price position management. Practical considerations when choosing between them include whether you need physical delivery and whether you accept margin requirements and overnight fees. Judging only from price charts overlooks how each instrument actually works.
Cross-border gold prices are affected by the CNY exchange rate
Even if the USD price of London Gold stays unchanged, a rising USD/CNY exchange rate pushes up its converted CNY-per-gram price; a stronger Renminbi will lower the converted value. The exchange rate is therefore an essential factor when comparing Au99.99 and London Gold. Directly contrasting percentage returns between the two markets may mistakenly attribute exchange rate moves to underlying gold price changes.
Risk Warning: Products on different trading venues have distinct mechanisms and capital requirements. Investment decisions should not be made solely based on price levels.