Quick maths in my head. The sun would make a 3 km (radius) black hole. The radius of a black hole is proportional to its mass, so we're talking about a 36 billion kilometer black hole. It's big enough to contain all the planets of our solar system, even the Kuiper Belt, and continues a couple of times farther. It's big.
Pretty but no ebony.
And that is one juicy ass hole.