To provide a structural body having a new shape and including a garnet crystal structure.A structural body comprising LiaM1bM2cOd (5≤a≤8; 2.5≤b≤3.5; 1.5≤c≤2.5; 10≤d≤14; M1 is at least one element selected from Al, Y, La, Pr, Nd, Sm, Lu, Mg, Ca, Sr, or Ba; and M2 is at least one element selected from Zr, Hf, Nb, or Ta) including a garnet crystal structure, wherein in a scanning electron microscopic image obtained through observation of a fracture surface in a depth direction of the structural body, a striped pattern extending along the depth direction is shown, and/or in a scanning electron microscopic image obtained through observation of a cut surface in the depth direction of the structural body, a continuous body extending along the depth direction is shown.