The research work is devoted to the comparison of two glasses of the same composition but synthesized on different quartz materials - Tashlinsky deposit sand and Ural quartz «Crystal Mountain»), otherwise the same raw materials are used. The physicochemical properties of the obtained glasses were determined, and it was revealed that when quartz is used in glassmaking, the light transmission indicators increase. Therefore, such glasses can be classified as "especially transparent". © The Authors, published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (https://creativecommons.org/licenses/by/4.0/).