Height of Antique Chandelier Over Table

There are two rules I know of regarding the height and size of an Antique chandelier going over a Dining room table.
1) Don't hang the bottom of the Antique fixture less than 5 feet from the floor or 30 inches from the table top.
2) Don't exceed the width of the table with the diameter of the fixture.
The rest of it that is most of the time there is no rule to cover it.
  I usually say the height of the Antique over the table has to do with the ceiling height of that particular room. A room with a 9 foot ceiling will usually look good with a fixture hanging 5.5 feet from the bottom of the chandelier to the floor.
  A room with an 11.5 foot ceiling will look better with the chandelier hanging 6.5 feet from the bottom of the chandelier to the floor.
  It is somewhat related to your door and window frames that are more stretched out in the room with the 11.5 foot ceilings where your door frames are closer to 6 foot 8 inches when you have a nine foot ceiling.