This necklace is composed of 10 store bought metal beads, and 19 glass beads.
It is heavily based on several Phoenician beads and necklaces I've found on museum websites, such as Corning's Glass Museum, the Metropolitan Museum of Art, and the British Museum, or on Christie's auction website.
Inspiration Face Bead
Inspiration Necklace 1
Inspiration Necklace 2
Inspiration Necklace 3
Inspiration Necklace 4
Note: Some of the museum websites indicate that the necklaces may have been recomposed at a later date, so it is not known if a necklace of this configuration would have been worn. One of the auction websites notes that their necklace contains modern metal beads, while another notes that the metal beads are several centuries newer than the glass beads on the necklace. However, while the necklace configuration may not be able to be documented, the glass beads themselves are easily documented using the first two links above.
Research Note on Face Beads
Face Beads started to be made in the 7th century BC, when according to Glenn Markoe in Phoenicians (p. 156-7), "demon masks, animals, and male and female heads began to appear. It's probably more correct to call these figures pendants, rather than beads, as Markoe notes that they were often found on necklaces as special talismans (perhaps these are another variant of "evil eye" beads, as are the stacked dots beads on the necklace above). Markoe says that these beads were likely made at multiple workshops along the Phoenician coast, in areas such as Cyprus, the Egyptian Delta, and Carthage. The pendants started small (3cm) but later grew up to 8 cm in height. These beads traveled widely and have been found throughout the Mediterranean, and in Russian and Europe
Markoe says that these beads were "rod formed," but I think the larger of these beads were more likely to have been core formed. Corning's Glass museum specifically notes that one of these beads was made using this technique. Core forming is a process where small dried balls of clay, dung, and straw were wrapped around a mandrel. The bead was made on that "core" and the core cleaned out once the bead cooled. This results in a hollow bead. It is also easier to make larger beads using core forming, as less glass is required due to the large core.
A previous post of mine on Phoenician beads which includes a reproduction of another variety of Phoenician face beads.