Don't be discouraged, Sheila. I've had plenty of rejections. There are other publications you can submit to that might be interested in your work. I've had several things that have been rejected by one publication (including Stringing) that I later submitted to another publication and have been accepted. There are other beading magazines that I'm sure you've seen in Michaels or Barnes and Nobel. You can google their names and find their website info, and most will have submission guidelines posted somewhere on their website.
You've already done the hard part, which is making the piece, photographing it and documenting your materials. To try again, all you have to do is send off an email.
Give it another shot!
Erin