The street in Mexico city where the jewelry tool shops are is
called Plama. They are located in the block north of Madero.
This is one block west of The Zocalo in front of the Cathedral.
Goofed again --the Jewelry tool district is 1 block East of the
Zocalo not one block West. There are lots of gold jewelry dealers
in the same area. For Silver Jewelry it is best to go to Taxco.