minecraft-assets/assets/minecraft/models/item/large_amethyst_bud.json

  {
  "parent": "item/amethyst_bud",
  "textures": {
    "layer0": "minecraft:block/large_amethyst_bud"
  },
  "display": {
    "fixed": {
      "translation": [ 0, 4, 0 ]
    }
  }
}