So sometime you'll have to explain the significance of 13 please :) ~Cody
I'm going to list some examples of 13 and below there are links that will help you scratch the surface of researching the significance of 13.
I became infatuated with the number 13 at a very young age. I was confused as to why my church said that Friday the 13th was 'evil.' I did what limited research I could at the time. Really there was nothing for significant study in my elementary school library, but the energetic intention was set firmly in my young mind.
It would be a good number of years before I stumbled upon numerology and the mysticism of numbers.
The number 13 is the Number of Ascension. It's represented symbolically in the physical human body by the 13 major joints. The 'lowest' 2 being the ankles, progressing 2 by 2 up to the shoulders. At the top, the 13th major joint is counted as the neck. In some ancient cultures the joints are where power gathered, that's why they could move us forward. All the joints except for the neck have a duality: Left and Right, Feminine and Masculine, Negative and Positive. 6 on the left. 6 on the right. Plus 1 that is unified at the top. 6+6+1=13
This example also exists in the energy body of the human form. We have 7 major chakras and an energy known as Kundalini that kind of wraps around them, keeping them spinning, when in balance. (I'm still not clear on sharing pics here so follow this link to see what I mean. You'll recognize it. Caduceus) This shares the same 6+6+1=13 math. There are 2 aspects to each of the chakras until you reach the crown. At the crown is Unity.
Getting to Mosaic of Light and the moon. In the lunar calendar system there are 13 Moons, approximately 28 days each and 1 Day out of Time. The solar calendar is 12 months. 6 months of daylight increasing and 6 months when daylight decreases. There is no 13th aspect of unification.
(This moon aspect is the most significant part of 13 to me and Mosaic of Light)
My OCD infatuation with numbers and patterns led me to get thirteen, 13's tattooed on myself, on each of 13 consecutive Friday the 13th's. HAHA!!! !!! !!! !!!! I've been weaving on the light and shadow sides of the 13 energy for a very long time. It started in grade school and culminated in the 13th, 13 tattoo being completed on September 13, 2013. That is another aspect of the number 13, cycles within cycles, going on and on until finally the bright promise of Completion with new, brighter beginnings inherent.
If you research a little more, in time, you will find exactly the right information for you. If you aren't really guided to worry about it that much, you can trust that I've got 13 working in your best interests... Reiki and Mosaic only work for the Highest good and can never do harm.
Some places to start your own investigation of 13.
The number 13 is the completion of life, of all movement and process. 13 has a special relationship with the development of paranormal abilities, for it is connected with the 13 major joints of the human body where the sacred koyopa energy (the Mayan equivalent of kundalini) accumulates. 13 also relates to refinement and sensitivity, enhanced perception and acute intuition. This ability to access other dimensions of reality applies to all actions performed on a 13 day as well as to those who are born upon a 13.
The higher numbers are seldom used for ritual because of the intensity of their energy. But there are exceptions to every rule. The day-sign "Men" (Tz’ikin) is auspicious and benefits from the powerful energy of the higher numbers. In Momostenango tradition, this is the day upon which a special ceremony is held to give thanks for the prosperity with which we have been gifted, and humbly to ask for more.
SOURCE: Kenneth Johnson’s commentary http://www.4-ahau.com/en/The_13_Numbers.html
"Perhaps this is why the number 13 has always been associated with magic and the occult, and why it is a number perceived to possess some mysterious yet tangible power. It is an emblem of a secret knowledge, a knowledge which does indeed confer power upon those conversant with it. It is a knowledge that religious orthodoxies have long feared and tried to suppress. 13 may be perceived as unlucky to those who fear the secret gnosis it represents, but for adherents of that gnosis it is (as it always was), a sacred number."
SOURCE: 13: A Secret Number of Sacred Power
"The Thirteen Moon calendar is an evolutionary tool to assist humanity in the unprecedented act of uniting itself on one issue central to its complete well-being: time. The harmonic convergence of humanity on this one issue, combined with the inescapable order, perfection and simplicity of following the 13 Moon calendar will lift the species as a simultaneous whole into the galactic timing frequency of 13:20."
José Argüelles/Valum Votan, The Call of Pacal Votan