Did you use diamond glaze to cover the bits?
I love how your necklace turned out. I would totally wear that
edited to add: I always use acrylic gel medium to cover and get reactions with the metal.
I used mod podge mixed with food coloring on the bottom, then after it was done I used crystal laquer (also from paper studio) on top. The glittery stuff is just glitter, and some very very tiny glass marbles that I found in the scrapbooking section at Michaels.