... high-tech Zirconia crafted, high-density, high hardness, never wear.2, Hardness (HRA90) is next to diamond, and abrasion performance is ... Knife has pretty white color like Jades.We could apply different knife handles to knife,such as plastic,ebony,ABS.We ... or dropping.3,Clean with water or detergent only, and reserve the tip in protected box when idle.4,Be careful with sharp blade ...