Havilah

the sand region. (1.) A land mentioned in Gen. 2:11 rich in gold
and bdellium and onyx stone. The question as to the locality of
this region has given rise to a great diversity of opinion. It
may perhaps be identified with the sandy tract which skirts
Babylonia along the whole of its western border, stretching from
the lower Euphrates to the mountains of Edom.

(2.) A district in Arabia-Felix. It is uncertain whether the
tribe gave its name to this region or derived its name from it,
and whether it was originally a Cushite (Gen. 10:7) or a
Joktanite tribe (10:29; compare 25:18), or whether there were both
a Cushite and a Joktanite Havilah. It is the opinion of Kalisch,
however, that Havilah "in both instances designates the same
country, extending at least from the Persian to the Arabian
Gulf, and on account of its vast extent easily divided into two
distinct parts." This opinion may be well vindicated.

(3.) One of the sons of Cush (Gen. 10:7).

(4.) A son of Joktan (Gen. 10:29; 1 Chr. 1:23).