A range of rods and flattened strips of glass found with other artifacts related to glass production at Tell el Amarna by W. M. Flinders Petrie in 1892. Glass became a luxury item from about 1500 BC. Molten glass was swirled around a disposable clay core then decorated with rods of coloured glass to create swirled patterns. Colours were created by adding different mineral pigments. These coloured rods were mounted on the card by Flaxman Spurrell (dimensions are 120 mm x 163 mm).