I'm almost positive that Theta badges are made by Burr, Patterson -- if I had my magazine in front of me I'd know for sure. Apparently we've got one of those 'order it through the KAO site only' for security things going on.
Greekgrrl
Also, there's about a gazillion options for the badge that you can purchase, plus ones that the council wears that are often older versions with opals, turquoise, and other stones you can't currently buy through HQ. (As opposed to the one option you have on your site.
)