faience and glass beads from the late bronze - Department of ...

29within the same bead, as exhibited by bead KW 4782. A number of irregular beads arepresent in this group, including double, elongated, and seemingly unfinished beads. 50All cogwheel beads analyzed appear blue under low magnification, oftenobscured by stains of dark red-brown in addition to the yellowish and lighter brown seenon other faience beads. This frequent staining, combined with the effects of erosion onthe bead surface, cause the assemblage to present a range of colors, including variousshades of blue, brown, gray, and white. Unlike the other types of faience beads, though,some rare cogwheel beads retain patches of bright blue glaze on their outer surface, suchas that seen on KW 3317 (fig. 2.6), and offer a glimpse of how these beads might haveappeared at the time of their use.Fig. 2.6. Cogwheel faience bead KW 3317 withpartially preserved surface glaze. Scale 3:1.The cogwheel group contains a special sub-group known as collared cogwheelbeads, so-called due to the presence of a collar or distinct convex band around theperforation at each end. These collared cogwheel beads occur infrequently atUluburun—only 17 have been identified—and are sometimes difficult to distinguishfrom plain cogwheel beads. 5150 These flaws will be discussed in light of bead manufacture in ch. IV.51 For measurements and photographs of sample beads, see app. B, 164-5.