The hole in this bead is 4MM and fits most Pandora, Troll, Chamilia, Biagi & other styles of European bracelets. This bead does not, however, represent any of these major brands.
Vermeil is a fusion of silver, gold, and sometimes other precious metals. A typical example, as in the case of this bead design, is .925 sterling silver coated with 14kt gold. In order for jewelry to be considered vermeil, gold has to be at least 10kt.