Novel　Tb3Sc2Al3O12　(TSAG)　magneto-optical　transparent　ceramic　was　fabricated　by　vacuum　sintering.　The　phase　composition,　microstructure,　optical　quality,　thermal　properties,　and　magneto-optical　properties　of　TSAG　ceramic　were　measured.　It　is　shown　that　the　increase　in　holding　time　has　an　effect　on　the　grain　size　of　TSAG　ceramic.　It　is　noted　that　TSAG35　ceramic　presents　the　highest　transmittance,　corresponding　to　81.5　%　at　the　wavelength　of　1064　nm.　The　thermal　properties　of　TSAG　ceramic　are　close　to　or　superior　to　that　of　the　reported　TSAG　and　TGG　crystals.　The　Verdet　constant　of　TSAG　ceramic　is　comparable　to　that　of　reported　TSAG　crystal,　and　1.2　times　that　of　TGG　crystal.　The　results　indicate　that　the　novel　TSAG　ceramic　is　comparable　to　TSAG　crystal　in　terms　of　magneto-optical　properties　and　superior　to　TGG　crystal,　making　it　a　candidate　material　for　magneto-optical　materials　to　be　used　in　high-power　lasers.　©　2021　Elsevier　Ltd