Complex sentence: The Maltese marble cippus is about high at the highest point, and is broken at the top.The Louvre "Cippus" is currently high at its highest point, wide, and thick.
Split into simpler sentences: The Maltese marble cippus is about high at the highest point, and is broken at the top. The "Louvre Cippus" is currently high at its highest point, wide, and thick.