A wedding sand ceremony is very popular. Two vessels of sand are poured together either into a third keepsake vessel or into the wind, to represent the coming together of your lives. It can also be a wonderful way to unite two families if either party has children already from a previous relationship. Each member of the family is represented by different colour sand, and as each is poured into the container, the individual portions of sand will no longer exist on their own, but will instead be joined together as one. Just as every individual grain of sand has its own unique beauty, strength and character, when blended together, they form an entirely new and extraordinarily more intricate whole. Like marriage, the sand ceremony respects the individuality of each person, but also unites them as one.
..portion of article posted by Robyn Rodda CMC for Celebrant Online blog