but both could be considered personal adornment. I think of gorgets as large, two hole pendants, whether that's right or wrong. Some of the large beads were originally intended to be worn by domesticated animals such as camels or horses but people do wear them. Charlottes, which are tiny glass seed beads are readily available in size 13 and can also be found several sizes smaller. A size 13 seed bead generally means that 13 beads lined up on thread would measure one inch. The Japanese cylinder beads come in a size that is just about 1mm in diameter and their perforations are, of course, smaller. OTOH, there are modern artisan beads that are, IMHO, unwearable but the intent was that they were to be worn.
I've attached a picture of a bead that I don't consider wearable because of size (5") and fragile elements(with apologies to the artist, Lewis Wilson) and a link to a catalog page that shows numerous seed beads.
Gradstu, be careful entering this world of beads as they are addictive--but in a good way.
Juel