You'll need pairs of 12mm, 14mm, and 18mm. Oh and bicones in 3mm. beads in sizes 8/0, 11/0, and 15/0. 6lb fireline or wildfire or size D nymo will also work. Size 10 beading needle.
I know I don't typically do beading tutorials anymore, but a friend asked me to design some earrings that use no specialty beads (i.e.: no beads with multiple holes or novelty shapes) because she doesn't have a huge bead inventory. So here's what I came up with!