WordPress/wp-includes/blocks/separator/block.json

{
	"apiVersion": 2,
	"name": "core/separator",
	"category": "design",
	"attributes": {
		"color": {
			"type": "string"
		},
		"customColor": {
			"type": "string"
		}
	},
	"supports": {
		"anchor": true,
		"align": ["center","wide","full"]
	}
}