Although stated in several popular publications, there is no proof,
archaeological or in ancient texts, of emerald mining in the Eastern
Desert during the Pharaonic period. Ancient texts provide us with
only a few clues on later emerald mining in the Sikait region. According
to the writer Strabo (ca. 60 BC - 20 AD), emerald mining started in
the Ptolemaic period. Nearly a century later Plutarch described how
King Ptolemy XII, the father of Cleopatra (VII) gave the Roman general
Lucullus a gold fitted emerald. The portrait of Ptolemy was engraved
in the gemstone, which made it impossible for the general to refuse
this gift without offending the king.
The first unequivocal mention of the Sikait region appears on stelae
of the early Roman period. An inscription from the quarry at Wadi
Umm Wikala dated 11 AD mentions the mines, as does a text carved on
the Serapis temple in Berenike, which refers to the mining area as
"the Land of the Green Stone". In 421 AD Olympiodorus visited the
south of Egypt. In his account of his voyage he mentioned he had to
obtain permission of the king of the Blemmyes, who controlled the
area by that time, in order to visit the mines.