... ; 3.No rusted and discoloration; 4. white Ceramic knife 5,LFGB,EU,SGSCeramic Knife – High Density ZirconiaItem No.: JH3A1-P05,JH4A1-P05 ... ", 4", 5", 6", 7" ceramic knife A seriesBlade Material: zirconium dioxide (ZrO2; also known as zirconia)Blade Colour: white,Handle Material: ABS+TPR ... original color and flavor, enjoy the gourmet flavor! High quality zirconia ceramic chef knife with sheath