Original Message:   Re: Black Glass
The bead and button makers in Bavaria made a truly black opaque glass from Proterobas, a local rock that melted relatively easily. This production seems to have ceased in the early 19th C. See the following article for more details: https://www.academia.edu/32800480/The_Fichtelgebirge_Bead_and_Button_Industry_of_Bavaria Copyright 2024 All rights reserved by Bead Collector Network and its users

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