Van Briggle Pottery is known for its art nouveau vases with abstract flower shapes or graceful human figures in a single rich color, subtly varied shades or tonal gradients of matte glazes.

A British couple got a nearly 1,500 percent return when a pair of iridescent Art Nouveau vases they picked up for £8 ($10) at a car boot sale sold for £1,200 ($1,500) at Richard Winterton ...

Since 1900, the original factory has made art nouveau dinnerware, realistic animal figures, art deco figurines, vases in modern designs and glazes and, recently, abstract shapes and patterns.