This is an antique stoneware canning fruit jar, made in the US between 1800-1899.
It is decorated with cobalt leaf designs on a gray-blue salt glaze.
It is 10" tall and 6" wide.
From the North Eastern part of the US, my guess is Pennsylvania.
I like how you can see the hand of the potter in the unevenness in the rim. He or she must have been getting tired that day!