How Metal Prices Work: Units, Spot, Futures and Major Venues

A metal price is an agreement for metal under specified conditions

A metal price is the exchange value agreed for a defined grade, form, place and date. The familiar statement that demand and supply meet is correct but incomplete. Refined bars, ore concentrate and fabricated products are not substitutes at no cost. Metal available in London, Shanghai or a fabricator’s warehouse cannot always be moved instantly. Immediate delivery and delivery several months ahead also carry different financing and inventory consequences.

The mix of participants differs by metal. Gold combines jewellery, investment, official-sector and technology demand, with a large stock of metal above ground that can return to market. Copper and aluminium are more closely connected to construction, power, transport and manufacturing cycles. Silver sits across the categories: it is held as bullion and used in electronics, photovoltaics and chemical applications. Those structures help explain why metals in the same headline index can react differently to the same macro news.

Before asking where a metal price may go, identify exactly what the quoted price represents.

Analytical principle used in this guide

Do not mix troy ounces, grams and metric tonnes

International gold and silver quotations commonly use the troy ounce. One troy ounce is approximately 31.1035 grams, and it is not the avoirdupois ounce used for many everyday goods. One kilogram is approximately 32.1507 troy ounces. Major LME base-metal quotations, by contrast, are generally expressed in US dollars per metric tonne. A metric tonne is 1,000 kilograms and is different from a US short ton.

Identical weight units still do not prove identical metal. COMEX standard Gold futures specify deliverable metal with a minimum fineness of 995, while standard Silver futures specify a minimum fineness of 999, alongside approved-brand and delivery rules. LBMA and LME markets also have quality, brand, warehouse or bar conventions. Multiplying a refined-bullion reference by the gross weight of jewellery, scrap or concentrate is not a complete valuation method.

Instrument names can look similar while their monetary value per point differs materially.

“Spot” is not one continuous global screen

Spot generally refers to a transaction for delivery on a nearby standard settlement date. It does not mean that every physical and financial order worldwide meets in one central order book. London OTC trading, exchanges, refiners, merchants, warehouses and regional physical markets can each have their own executable prices and conditions. A news vendor’s XAU/USD feed, an LBMA benchmark, a bullion dealer’s retail offer and a nearby COMEX future may be closely connected without being identical.

The LBMA Gold Price and LBMA Silver Price are widely used benchmarks for unallocated metal delivered in London. ICE Benchmark Administration independently administers electronic auctions from which the benchmarks are calculated. A benchmark can support valuation and contractual reference, but it should not be described as the only 24-hour spot price. Licensing can apply to use or redistribution of benchmark data, so researchers should link to the official methodology rather than copy a price table without checking rights.

A futures quote includes a delivery month and the economics of carry

A futures contract standardises the quantity and quality of metal for a future delivery period. The standard COMEX Gold futures contract covers 100 troy ounces; standard Silver futures cover 5,000 troy ounces. Although the displayed quote is per ounce, economic notional is the quote multiplied by the contract quantity. Margin is collateral under exchange and broker rules, not the same as notional and not a cap on loss. Smaller exchange contracts and dealer products have different specifications.

A curve is in contango when later delivery is priced above a nearer reference, and in backwardation when later delivery is below it. Financing, storage and insurance can make later delivery more expensive. The convenience of immediately available inventory, supply stress or demand for a particular prompt date can make nearby metal relatively expensive. A futures curve therefore contains more than a consensus forecast of the future spot price.

LBMA, LME and COMEX do not perform the same job

This is a structural overview. Eligibility, hours, rules and market-data terms can change.

LME Official Prices serve as global references for physically delivered non-ferrous metal, with separate Cash and forward prompt dates. The standard LME Copper lot, for example, is 25 metric tonnes. A fabricator’s delivered copper cost may additionally include a regional premium, processing charge, grade adjustment and freight. The exchange number is therefore a reference input rather than every user’s final invoice.

The venues are connected by hedging, arbitrage, inventory movements and foreign exchange, but moving eligible metal between locations requires time, finance and operational access. An apparent price difference is not automatically a risk-free opportunity available to every reader. Trading membership, credit, warrants, taxes, transport, conversion and timing need to be included before two prices are economically comparable.

Normalising three fictional “gold prices”

The following numbers are a fully fictional calculation example, not current market data, provider terms or a trade proposal. Assume an international reference of USD 2,400 per troy ounce, USD/JPY at 150.00, a domestic retail offer of JPY 12,000 per gram and a domestic buyback quote of JPY 11,500 per gram. The mechanical international conversion is approximately JPY 11,574 per gram. Timing, tax, fabrication, inventory and dealer spread could all contribute to the remaining differences.

1. Align time: record the benchmark, FX and retail timestamps.
2. Align units: convert troy ounces to grams and dollars to yen.
3. Align price side: do not compare a midpoint with an offer or a dealer bid.
4. Add contract conditions: check fineness, bar size, tax, delivery, storage and fees.
5. Explain the residual carefully: do not label it cheap or expensive before identifying the differences.

Seven checks to run whenever a metal price appears

1. 01Identify metal and quality

   Record fineness, form, deliverable brands and whether the object is refined metal, scrap or concentrate.

2. 02Name the price source

   Distinguish an LBMA benchmark, LME Cash price, delivery-month future, dealer quote or retail price.

3. 03Normalise unit and currency

   Convert troy ounces, grams or tonnes and preserve the FX rate and timestamp used.

4. 04Check place and date

   Record location, spot date, prompt date, futures month and any roll rule.

5. 05Expand to quantity

   Multiply by contract units and calculate tick value and economic notional.

6. 06Add cost and settlement

   Include spread, commission, holding cost, FX conversion and physical or cash settlement.

7. 07Save primary evidence

   Store the specification, rule date, data source and arithmetic so the comparison can be reproduced.

Once verified contract quantity is known, the FX & CFD Lot Size Calculator can translate entered contract and stop assumptions into quantity, margin and estimated loss. The Trade Cost Calculator can organise an entered spread, commission and holding charge. Neither tool fetches a live metal quote, recommends exposure or establishes suitability.

Continue with the metal-specific layers: gold price drivers separates macro opportunity cost from physical and official demand; the silver market guide joins industrial and investment demand; and the copper market guide follows electrification, inventories and the physical supply chain.