Platinum and palladium are climbing on expectations that demand for the metals will stay steady as supplies drop.
March palladium rose $7.65, or 1 percent, to settle at $765.45 per ounce. April platinum gained $9.10 to $1,707.20 per ounce.
Reports of stronger car sales have helped pushed prices for the metals up more than 1 percent this week. Both metals are used to make catalytic converters that filter car exhaust.
Other metals were mixed. Gold for April delivery lost $2.90 to $1,673.50 per ounce.
Silver for March delivery rose 15.9 cents to $31.875 per ounce. March copper was little changed at $3.77 per pound.
In other trading, wheat and corn dropped slightly while soybeans rose.
Benchmark oil for March delivery rose 47 cents to finish at $96.64 a barrel.