Spinel, MgAl 2 O 4 (download cif), is a rare gemstone that was used to imitate rubies. The structure has face-centered cubic symmetry, and is a little heavy to understand. The general formula is AB 2 ...

All the latest game footage and images from Letters From a Rainy Day: Oceans and Lace by Lily Spinel | 2021 2 / 6 3 / 6 4 / 6 5 / 6 6 / 6 2 / 6 3 / 6 4 / 6 5 / 6 6 / 6 ...