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.
I LOVE THIS IDEA!♥♥☆☆♥♥Easy DIY fish bowl centerpiece idea for a purple wedding. Can use clear or lilac water beads and purple flowers, the lights inside are easy to find, the mirror is a must but the lilac water beads really glow