a couple years ago, i got my g/f, Mandi, a white gold necklace with a heart/diamond charm yadda yadda. the chain broke. it was quite dainty...perhaps too much so. i want to get her a stronger chain to replace the broken one, so i've been thinking about a box chain. she's a small girl...like 5'5, 100lbs max. would a box chain look kind of goofy with a pendant on her? would the chain be too bold? and is common jewelry like this all the same, like innertubes (many brands, few actual manufacturers) with the only real difference being the name on the box?