src/main/resources/assets/aether_legacy/blockstates/crystal_leaves.json

{
	"variants": {
		"crystal_leaves=crystal_leaves": {
			"model": "aether_legacy:crystal_leaves"
		},
		"crystal_leaves=crystal_fruit_leaves": {
			"model": "aether_legacy:crystal_fruit_leaves"
		}
	}
}