In Links of London Charms today you’re as likely to see a pierced, tattooed, bejeweled man pushing a baby carriage as pushing drugs in the West End superclubs. The generation of fashion-forward men who patented ironic housing-project cool has grown up.  A young generation that wasn’t even born when links of london was last acceptable as men’s style, around 1975, are discovering big jewelry for the first time. This double whammy means men in yellow gold aren’t going to lose their luster within a season.  links of london Star of David Charm  is a columnist for the Independent on Sunday.