This is the necklace Aiba wore during the ONE concert, and for some photoshoots last year. For a reference image click here.
[The magazine page in the background is page 98 of the October 2005 issue of Duet.]
It's not exactly accurate, since I couldn't find beads exactly like his and I used stones instead of glass beads. Sadly, these particular stones don't come in black, so the black bead is an orange one I sharpied. XD
I have no idea what type of red cording Aiba's necklace actually uses. My version uses a strong red beading elastic, and attaches at the back of the neck with a silver clasp. The holes in the beads were really small, so I could only thread through them once. This changed the way I had to make the necklace, so it relies on crimping beads to stay together. Uh, besides that, it's construction is fairly straight-forward. It doesn't look exactly like his, but I think it came out pretty well. :3
I hope you like it, acidae! ♥