Phosphophyllite from Land of the Lustrous (Houseki no Kuni)
Land of the Lustrous has always been a very special anime / manga series to me. It's a beautifully unique story with incredibly interesting and memorable characters! The anime especially still wows me every time I see it! The 3D animation is seriously stunning and the soundtrack is something to behold as well!
I hope to see more of the story adapted into animation someday! (^◡^)