Fabulous!!...Can't tell you much but for the fact that it's beautiful and likely very expensive.

Its hard to see the details, but if you google "clear molded glass waterfall chandelier" a few of the images that come up look close to what yours looks like.

If those tubes are clover shaped, it could be Venini with Murano glass tubes. Or, it could be Camer. (or it could be a knock-off). These are circa 1960s-1970. A Venini or Camer one like this would be worth a couple thousand dollars or more. They are often much bigger

Here's one.

Here is a link that might be useful: Venini Chandelier