African bicone powder decorated glass trade bead.

An unusual glass bicone trade bead which appears to have a type of powder glass decoration over a dark blue core. I have not found any examples of this type in my reference books and although it has  ‘pelangi’ rainbow colours I think this could be African.

Provenance: Woolley and Wallis, Salisbury
Dimensions: 3.6cms x 1.6cms diameter.  Tube diameter tapers from 4.5mm to 3.9mm
Weight: 10.5gms
Condition: Excellent. (11)

Books referenced.

‘A Bead Timeline Vol.1 Prehistory to 1200CE’. James Lankton. ISBN 0-97-25066-1-6
‘The Worldwide History of Beads’. Lois Sherr Dubin. ISBN 978-0-500-29177-1
‘Glass Beads from Europe’. Sibylle Jargstorf. ISBN 0-88740-839-7
‘Beads. A History and Collector’s Guide’. Stefany Tomalin. ISBN 978-1-4456-5865-0
‘A Handbook on Beads’. W.G.N. van der Sleen. ISBN 2-87011-008-1