Probably another name for Ophir (Jer. 10:9). Some, however, regard it as the name of an Indian colony in Yemen, southern Arabia; others as a place on or near the river Hyphasis (now the Ghana), the south-eastern limit of the Punjaub.
Easton’s Bible Dictionary
Uphaz
Name meaningpure gold; gold of Phasis or Pison
Easton’s Bible Dictionary (1897), public domain. Text via Theographic Bible Metadata, CC BY-SA 4.0.