Image from the Chimera Costumes archive
Ancient Pricing
In Ea-Nasir's time, copper was priced in weighed silver — the shekel was a unit of weight (approximately 8 grams) rather than a stamped coin. Commercial records from ancient Ur document copper transactions at prices that varied depending on quality grade, quantity, and the supply conditions of the Persian Gulf trade network. The quality dispute at the heart of Nanni's complaint was partly a price dispute: inferior copper delivered at a quality-copper price was a form of commercial fraud.
The standardised oxhide copper ingot (approximately 25 kilograms) was the Bronze Age's unit of commercial copper — a packaging format that made bulk pricing straightforward. Multiple ingots of consistent weight and composition could be priced and traded without weighing and assessing each transaction individually. Ea-Nasir's failure to deliver ingots of contracted quality was not just a qualitative failure but a quantitative one — he charged quality-copper prices for inferior-copper goods.
Modern Market Structure
Modern copper is priced on global commodity exchanges, primarily the London Metal Exchange (LME), the Commodity Exchange (COMEX) in New York, and the Shanghai Futures Exchange. These exchanges establish benchmark prices through continuous trading that reflects global supply, demand, and investor positioning.
The LME copper price is the global reference price — when you see 'copper price' in financial news, it is almost always the LME three-month forward price, typically quoted in US dollars per metric tonne. All major physical copper transactions in the global market use the LME price as a reference, with premiums or discounts for specific quality grades, locations, and delivery terms.
Price History Highlights
Copper traded at approximately $1,500-2,000 per tonne through most of the 1990s. The commodity supercycle driven by China's rapid industrialisation pushed prices above $8,000 per tonne by 2006-2008. The 2008 financial crisis caused a sharp decline to approximately $3,000 before a rapid recovery. Prices exceeded $10,000 per tonne briefly in 2011 and again in 2022. As of 2025, copper trades in the $8,000-10,000 range, with analysts expecting sustained upward pressure from energy transition demand.
The long-term trend is clearly upward, reflecting both the depletion of easy-to-access high-grade deposits (mines get progressively deeper and lower-grade over time, increasing extraction costs) and rising demand driven by electrification and the energy transition.
Frequently Asked Questions
Copper trades in approximately the $8,000-10,000 per metric tonne range as of 2025, though prices fluctuate continuously on global commodity exchanges.
Long-term factors include depletion of high-grade deposits (requiring deeper, more expensive mining), rising demand from electrification and EVs, and growing supply concerns as the energy transition accelerates.
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