I use 14kt gold filled wire. This is also known as jeweler’s wire. Some wire workers call it rolled gold, which it is not. Rolled gold contains much less gold than gold filled material.  I use no electroplated wire in any of my pieces.  I have customers that visit me at my booth to show me the bracelets pieces they bought from me back in 1990!  The silver I use is either sterling silver or argentium silver. Argentium silver does not tarnish..  Most of the pieces I do can be done in either gold or silver with the exception being the one of a kind pieces.  I am glad to work with you to meet your needs.  Contact me and lets discuss what you’re looking for. I’ll be glad to make it for you.