minecraft-bedrock-json-schemas/source/behavior/items/format/components/icon.json

{
  "$id": "blockception.minecraft.behavior.items.minecraft:icon",
  "title": "Icon",
  "description": "The icon item componenent determines the icon to represent the item in the UI and elsewhere.",
  "type": "object",
  "additionalProperties": true,
  "required": ["textures"],
  "properties": {
    "textures": {
      "title": "Textures",
      "description": "Contains key-value pairs of textures used by the item",
      "type": "object", 
      "additionalProperties": true,
      "required": ["default"],
      "properties": {
        "default": {
          "type": "string",
          "title": "Default Texture",
          "description": "The key from the resource_pack/textures/item_texture.json `texture_data` object associated with the texture file Example: blaze_powder."
        }
      }
    }
  },
  "examples": [
    {"textures": {"default": "stick"}}
  ]
}