Antique Irish cut glass decanter Georgian early Victorian

A fine decanter which i believe dates to the early 19th century, has the slight grey quality of antique glass as opposed to the brilliance of modern glass. It is over a hundred year old so will show a little wear, the only actual damage is a very small chip ,about 5mm off the edge of one of the facets but it's hardly visible. There is also a faint tide line inside which you can see on the photo, if you know how to treat antique glass it may well be possible to remove it.

eBay