So I just finished reading the entire Blackest Night and will be starting the Brightest Day next. After finishing that series and learning a tone more about the DC Universe (I typically lean Marvel in my readings) I did some handy dandy looking online to see what was available. Other than the Noble Collection and other expensive replicas that were never meant to be worn there were a literal crap-ton of knock off power rings. Then I came across this whole set (albeit plastic) of the whole spectrum of lantern corps. Check them out!
DC Direct Blackest Night Power Ring Spectrum Set http://www.amazon.com/dp/B004Y1TQQ0/ref=cm_sw_r_an_am_at_ws_us?ie=UTF8