"Jasper, the most famous of Josiah's inventions, first appeared in 1774 after thousands of experiments. An unglazed vitreous fine stoneware, it was made in blue, green, lilac, yellow, black or white; sometimes one piece combined three or more of these colours. Upon these delicately coloured grounds would be applied the classical and contemporary reliefs which are still made today from moulds reproduced from the originals. The iconic light blue jasper gave rise to the expression "Wedgwood Blue" and remains a recognizable Wedgwood signature worldwide."

- History taken from wedgwood.com -