Jasperware
Jasperware is the most recognizable of Wedgwood plates, for they are blue, with a bisque type of composition. The plates are often decorated with high-quality, raised white designs in elaborate mythological themes and pieces have the distinct Wedgwood markings underneath.
Queensware
Queensware is a glazed lighter blue, with an embossed ivy leaf trim or border around all plates, even matching saucers and cups. This is the standard style for Queensware.
Markings
Markings for Wedgwood include the company name molded into the plate or the "Made In England" mark with an urn symbol underneath. There may be date numbers, which clearly signify when the plate was made. Look for the last two numbers. That should indicate the year.