Silicate glasses can exhibit a wide range of properties.

To understand, tune, and enhance the properties of silicate glasses, one needs to decode the “glass genome,” that is, to uncover how basic structural features control a glass’s macroscopic properties.^1,2 Such decoding requires accurate knowledge of the atomic structure of silicate glasses. However, despite silicate glasses’ ubiquity and technological importance, their atomic structure—especially at the medium-range order—remains only partially understood.³