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.
submerging our flexible garland of sparkling gold beads and topping it with ivory floating candles. Cylinder Vases and Gold Garland Set includes: 1 each Large, Medium and Small Cylinder Vases, 3 Gold Bead Garlands and 3 Ivory Floating Candles