Wikipedia
Dizahab
Dizahab (meaning "region of gold" or "abundant in gold") was one of the places bounding the arabah. It is mentioned in "These are the words Moses spoke to all Israel in the Arabah — facing Suph, between Paran and Tophel, Laban, Hazeroth and Dizahab."
On Burtons map it is located south of Mt Horab and Elat on the northwestern shore of the Gulf of Aqaba a bit northeast of the desert of Paran.