Applied-Energistics-2-tilera-Edition/src/main/resources/assets/appliedenergistics2/blockstates/sky_stone_brick_slab.json

{
    "variants": {
        "half=bottom,variant=default": { "model": "appliedenergistics2:slabs/sky_stone_brick_half" },
        "half=top,variant=default": { "model": "appliedenergistics2:slabs/sky_stone_brick_upper" }
    }
}