So we were just looking at this one, which is similar to another one called "Stalactite" and I started making this one as a "Stalacmite" to match the other! Jane then said it looks like a nice Aquarium and I agreed..therefore.."Aquarium" it is!
Its really a nice holder with a very beautiful green. It is 6" tall by 4" wide and this one looks good in the sunlight as well ! Maybe you could put a goldfish in there for awhile, but I don't think it would be too happy, but worth a shot.