Fig. 13From: An archaeometric contribution to the interpretation of blue-green glass beads from Iron age Central ItalyMgO vs K2O plot. Groups 1–8 are representatives for samples considered in the present study. External data sources: Poland HMG and Poland LMHK – [5]; Veneto LMG and Veneto LMHK – [4]; “Etruscan” LMG – [82]; Average Egyptian and Mesopotamian LBA Cu glass – [83]; Pella LBA/IA Cu glass – [71]; South Italy HMG and LMHK glass – [84]Back to article page