Correct json file

{
    "parent": "item/generated",
    "textures": {
        "layer0": "items/diamond"
    },
    "display": {
        "thirdperson_righthand": {
            "rotation": [0, -180, 0],
            "translation": [0, 1.51, -1.12],
            "scale": [1, 1, 1]
        },
        "firstperson_righthand": {
            "rotation": [0, -15, 25],
            "translation": [0, 4, 2],
            "scale": [1.7, 1.7, 1.7]
        },
        "thirdperson_lefthand": {
            "rotation": [-90, 0, 0],
            "translation": [0, 1, -3],
            "scale": [0.55, 0.55, 0.55]
        },
        "firstperson_lefthand": {
            "rotation": [0, -135, 25],
            "translation": [0, 4, 2],
            "scale": [1.7, 1.7, 1.7]
        }
    }
}