Cheap chain hardware, Buy Quality pearl rosaries directly from China pearl wedding jewelry sets Suppliers: White / Ivory Pearl Chains For Decorating Favors, Vases And Incorporating Into Centerpiece, Bouquet, And Pew Bow Arrangements
I have also seen similar centerpieces that use epsom salts instead of sugar. You could also sprinkle a mix of pearls/gems. Sand (or sugar), faux pearls, a 3 candle. An easy DIY wedding centerpiece idea.