This Unity candle bears the following words

Two souls
with but a
single thought,
Two hearts
that beat
as one.

Size: 8in x 3in

And can be personalised with the couples name on the front and a message on the reverse of the candle. 

Celebrate the union of your lives with the symbolic
Unity Candle Ceremony

During the ceremony, the bride and groom
pick up candles lit by their respective mothers
 and light the centre candle.

The following is a suggestion to be read
 by the minister,
Master of ceremonies, or spoken aloud by the
bride and groom.

As we light this candle,
 let it represent the unity of our lives
from this moment on.
  As this one light cannot be divided,
neither shall our lives be divided.
May the radiance of this one light
Be a testimony of our unity.