This is Deborah Roberti's Stacker pattern using only tilas.  The last one that I did was another variation...I think this one works better if your Super Duo is not the same color as your 11/0 bead that's closest to it.  I was especially pleased with the clasp because it kinda looked like the tilas!   :)  Also, I found out the hard way that Super Duos work WAY better than twins in this pattern.