It has an outer diameter of about 9.5 mm and a width / length of 10 mm.
I always find it annoying if the size is not present in the beads and then a midget I have before me, so I measured it and the size specified here.
Oh, you should still know that Amazon (herself) the Pandora beads usually shipped in small plastic bags that say "Made in Thailand", etc. stands. So without a gift / jewelry box! This makes Amazon but always so, even with expensive gold beads, so it has nothing to do with the price or the question "Real or not real" to do. If you want to have a gift / jewelry box, you should at a Pandora local dealer or one of the suppliers buy here that explicitly promise.