While the history of the unity candle is a bit ambiguous
the symbolism is more clear than ever!  There are three
candles placed usually on one side of the ceremony
space.  Two smaller ones representing the bride and
groom and a larger candle between the two representing
the two individuals as a couple.  After the officiant
finishes leading the couple in their vows, the bride and
groom take their individual candles and, together, light
the large candle.  This signifies the joining of two lives
into one.  Now the couples may choose between blowing
out their own candles, a symbol of the complete devotion
to one another, or they may keep them lit, a symbol of
that in their new unification they will maintain their
individuality.

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There are, however, new ways of representing this unity
with different objects.  The couple can use sand or water
of different colors.  With the sand, two different colors
can represent the new layers.  Choosing two water colors
to mix together to make a new, blended color is a great
representation of their blended lives.  These two elements,
rather water or sand, cannot be separated back into their
original individual forms.  This signifies their lifelong and
irreversible bond.

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Our two favorite unity ceremonies involves wine and trees!
The couple takes two bottles of wine and simultaneously
pour them into one wine glass, from which they both then
drink.  Similar to the sand and water, the two wines can no
longer be separated and the drinking of the wine signifies
that the couple’s love sustains them.  If the couple is into
going green or just loves trees, they can use two vases of
soil, two water cans, and a newly potted tree.  Together,
they add the soil to the pot and then empty the water cans
into the soil, symbolizing the support and nourishment
that they promise to provide to each other.