This is an excerpt from my upcoming paper discussing the manufacture and use of Predynastic Ancient Egyptian palettes, highlighting the various steps which are required to create a fish-shaped (pisciform) palette. The replica was made from slate rather than siltstone/greywacke, as the material was easier for me to obtain. The steps are essentially the same but as slate is softer (Moh 3-4 vs Moh 6-7) it would take longer to create out of siltstone/greywacke and be potentially more abrasive to the tools.
