Question for my jewelry crafty friends

[fenicedautun]

My mother was going through her jewelry box (mostly the old stuff, not the really valuable stuff), and came up with a necklace that she loved but kept breaking. It's black (possibly jet) polyhedrons (roughly spherical) individually knotted on a string, with a large teardrop pendant in the center. The center is what keeps breaking (apparently the teardrop is too heavy). Any thoughts for solutions? Would jewelry wire work?