14th-15th century
Islamic
For hundreds of years, women up and down the eastern coast of Africa wore bracelets like these as highly fashionable accessories. Simple monochromatic glass bangles first became common in Egypt beginning in the Ptolemaic Period (332–30 BCE), with multiple color chips and new designs emerging during the Roman period (30 BCE–395 CE). After the arrival of Islam in the 7th century, elaborately designed bracelets became the norm. Glass workshops continued to produce such bangles until the end of the 19th century.
Glass