LME nickel hit its highest since September 2019 at $18,060 a tonne, up 1.6pc, after stainless steel futures surged as much 5pc in China and inventories in the country slid.
Three-month aluminium on the London Metal Exchange was down 1.6% at $1,998 a tonne.
With aluminium, you can't argue that the metal is in short supply. There are production increases pretty much across the board and new capacity is being energised.
Sterling rose on Thursday as Britain and the European Union clinched a Brexit deal that avoided a chaotic British exit from one of the world's biggest trading blocs.
Equities and oil prices fell and the dollar strengthened as countries including France, Germany, Italy, the Netherlands, Switzerland, Israel and Canada closed travel links with Britain.
Benchmark copper on the London Metal Exchange (LME) was down 1.4% at $7,871 a tonne.
The most-traded January copper contract on the Shanghai Futures Exchange climbed as much as 2.2pc to 59,500 yuan ($9,095.36) a tonne, a level unseen since September 2011.
Investors bought riskier assets across the board, sending global equities to new peaks, oil prices to a nine-month high and the dollar to its weakest since April 2018.
Copper has been buoyed recently by bullish developments, including strong demand from China and possible supply problems.
Typically, if you have this kind of excessively bullish mood, and with this stretched positioning in the futures market, a 10% correction would not be unusual.
Benchmark copper on the London Metal Exchange (LME) was down 0.2% at $7,694 a tonne.
On Monday it touched $7,800, its highest since March 2013, having increased in value by almost $3,500 a tonne since March this year and $1,000 in the past month alone.
Three-month copper on the London Metal Exchange fell 0.4pc to $7,680.50 a tonne by 0706 GMT, slipping from its highest since March 2013 of $7,800 hit on Monday.