Repair to vase

[abstibus]

I have a Belleek china vase that seems to be leaking, but I can't see a crack. Is there anything I can do to make it watertight again - seal it inside?
Many thanks

[Wak]

All I can suggest is to put about a tea-spoon of clear varnish in the vase and then rotate/manoeuvre the vase until the inside (apart from the last top half inch?) is fully covered with the varnish. Then let it dry. Or you may find some other liquid which will do a similar job???

[carlton23]

Be sure to use marine varnish that will last longer.

[Naomicorlett]

If not will it take a drinking glass inside ?

[abstibus]

Thanks to all,
I will try the varnish, as the neck is narrower than the shape of the vase.