Unknown block given after custom item command

ran the following command:/give @a minecraft:diamond_sword 1 500 {Unbreakable:1,ench:[

{id:17,lvl:1000}

]}

what I expected to happen: be given a diamond sword with 500 damage, unbreakable, and smite lvl 1000

what actually happened: I was given what looks like a pink and black block that is enchanted. when I looked at it in inventory, it still said it was a diamond sword with the enchants, but texture was not right. See screenshot