Polished Deepslate

Recipe #3

{
    "type": "minecraft:crafting_shaped",
    "category": "building",
    "key": {
        "S": {
            "item": "minecraft:cobbled_deepslate"
        }
    },
    "pattern": [
        "SS",
        "SS"
    ],
    "result": {
        "count": 4,
        "id": "minecraft:polished_deepslate"
    }
}