The market price of antique mason jars can be found in the Red Book for fruit jars. Many mason jars are stamped with the date 1858 even if they were made long after that date, according to GlassBottleMarks,
John Mason patented his screw-top glass canning jar in 1858, and many mason jars that were made since bear the embossed stamp of that year, says Collectors Weekly. Blue was a common shade of glass manufactured by the Ball Brothers, as stated in a Wikipedia entry. Collectors Weekly notes that the Ball Brothers was the company that standardized the sizes of mason jars.
According to GlassBottleWorks, fakes are prevalent, and the Red Book for fruit jars is the best place to determine the value of an antique fruit jar or canning jar. Brightly colored jars are usually reproductions, even if they are stamped with the year 1858.