Japanese porcelain makers in the 19th century used cobalt that turned the blues in its porcelain much darker.
At the same time in China, the shade of blue was typically lighter.
If you look at the base of a piece, or at the clay interior that might be revealed by a chip, you can also get a sense of whether an object really is porcelain.
In porcelain, the clay fuses and produces a smooth surface even where it's chipped.
Landscape scenes did not become a widespread decorative feature on ceramics in general before the 17th century.
With the increasing use of ceramic marks in the 19th century, a large proportion of English pottery and porcelain can be accurately identified and often dated.Called under-glazed blue-and-white porcelain, it has been made for a thousand years in China and for hundreds of years in other parts of the world, including Holland, England and the Middle East.But can you teach yourself how to navigate such a vast field of porcelain with confidence that you aren't making too many mistakes—or worse yet, getting duped?Get a Feel Examining the type of porcelain the piece is made from will reveal even more about its origins.For example, the craft of porcelain making was unknown in Europe until the early 18th century, so porcelain purported to be made on that continent before that time simply is not, Lark notes.