Unicopia/src/main/resources/assets/unicopia/recipes/spellbook.json

{
	"type": "minecraft:crafting_shapeless",
	"ingredients": [
        { "item": "minecraft:book", "data": 0 },
        { "item": "unicopia:gem" }
    ],
	"result": { "item": "unicopia:spellbook", "count": 1, "data": 0 }
}