Zerduz Financial Assistant is a specially designed device that has the ability to simply calculate and report values such as money, metal, labor and carat in a single terminal, thanks to its special formulas defined on its keys, based on the usage habits of expert calculators of the relevant sectors in the finance, production and sales stages, with the current exchange rates and data, which automatically receives their own denominations and or different financial equivalents together or separately, in order to increase the timing, accuracy and scope standards of precious metal and foreign exchange calculations in the Jewelery sector.