There are several lists available documenting various jewelers' marks including Antique Jewelry University and the Online Encyclopedia of Silver Marks, Hallmarks & Maker's Marks. Both lists feature jewelry makes from around the world and cover a wide range of jewelry both in type and quality.
The lists offer location, time period, a brief history and images of each mark and can be searched by specific categories, such as material or region.
The Antique Jewelry University website has a greater focus on jewelry in general and offers several images of the jewelry pieces associated with certain marks or time periods. The Online Encyclopedia of Silver Marks, Hallmarks and Maker's Marks website focuses on the marks themselves and provides a more comprehensive list, although without many images of jewelry pieces.