The spiral is a Koru, represents the fern frond as it opens bringing new life and purity to the world. It also represents peace, tranquility and spirituality along with a strong sense of regrowth or new beginnings.
The Koru is also often associated with nurturing so when interlocked with others is frequently used to represent the strength and purity of a loving relationship within a family.
Double Koru design:
The design in the shape of two unfolding fern fronds symbolize the bonding within a family with two opposite but complimentary life forces.
As each frond unfolds to leave the circle, it reaches out for a new life, new growth and so represents the cycle of life.
Hei Matau - Fish hook design:
Hei-Matau (fish hook) represents strength and determination. It brings peace, prosperity, abundance and good luck.
It also is said to provide good luck and safety when traveling over water so is often worn by travelers.
Hei-Matau are also symbols of power and authority which are held in great reverence by the Maori people.
Koru - single twist design (eight shape):
The twist with its crisscross form represents the many paths of life and love and as such is regarded as the original eternity symbol.
The single twist in particular shows the joining together of two people for eternity. Even though they sometimes move away from each other on their own journeys, they will always come together again sharing their lives and blending to become one. It tells how the strength of bond of friendship, loyalty and love will last forever.
The double and triple twists have a similar meaning but refer more to the joining of two peoples or cultures rather than individuals.