The present invention relates to a glass ceramic powder comprising i) a glass material formed from a glass mixture containing a lithium and oxygen containing compound selected from Li2O and/or Li2CO3, SiO2, K2O, La2O3, and ii) seed particles comprising Li2SiO3 crystals and/or Li2Si2O5 crystals. The present invention also relates to a method of manufacturing of said glass ceramic powder, a method for preparing compacted and sintered bodies from the glass ceramic powder and bodies obtainable by said method.
