How do I emboss (brand) my items?

[PSPendants]

OK clever and resourceful teammates, I have a challenge for you. I need to put my site name, pspendants.com, on the back of each one of my pieces. I have sold a lot of pieces, both in person and online, and I know when people get them as gifts, they might want to buy more, but have not saved my card with my info on it. So, I want them to be able to turn the piece over and read the website name on the back. But how do I do that? My tray is made of zinc with a thin coating of silver. I have thought of etching cream, or hand stamping, but am not sure what might work. Since my largest tile is only 35mm square, and I have to fit 14 spaces on there, it would have to be small but large enough to read. So, any suggestions would be GREATLY appreciated.
Thank you very much!!!
Your Desperate Teammate,
Jan

[NaturalClocks]

Hi Jan. Threads never really get seen unless they are highlighted at the top of page one. For any questions and help, please join us in the daily chats, there is a new one every day and you can ask anything you want there, hopefully somebody will have an answer for your query :) Thanks!

[PSPendants]

Thanks Val, will do