Sydney woman robbed in bedroom

A woman has been robbed at knifepoint in the bedroom of her home in one of Sydney's wealthiest suburbs.

The 51-year-old was confronted by the armed thief on Sunday afternoon in her Bellevue Hill house on Kalgoa Road.

He demanded her jewellery and when her husband returned home shortly after, the thief took his car keys.

But he didn't get far in the luxury 4WD, crashing into a pole before running away.

He's described as possibly being of Aboriginal or Torres Strait Islander appearance, 183cm tall, with a medium build and dark brown hair.