{
    "parent": "item/generated",
    "textures": {
        "layer0": "item/firework_star",
        "layer1": "item/firework_star_overlay"
    },
    "overrides": [
        {
            "predicate": {
                "custom_model_data": 1000
            },
            "model": "custom/rock"
        }
    ]
}