What is the difference between designer and manufacturer?

Some one who created the style of the jewelry is the designer. the manufacturer is the company who makes it and markets the work. At times a designer can have both designed and manufactured his own work. Such an artists is Kenneth J. Lane who in the 1960 's purchased a factory to produce his own creations. While other manufactures, such as the well known and highly collectible Trafari, employed many different designers to create jewelry for them. The terminology between designer and manufacturer is somewhat complex and are often used interchangeably. .