Well the first site I mentioned only speaks a small bit about each of the synergy stones. the other sites I've googled are not exactly what I was hoping to locate either, but on this one below, I did find it listing books and also jewelry of these 12 crystals together. Most is a bit pricey--more so then I am interested in, but it's nice to know that there are also books out there and so perhaps I'll keep my eye open for this.
http://www.crystalsrocksandgems.com/SynergyHealing.html
so anyway, i've not really found a site by googling that really makes me happy, so I think I may just take the twelve individually and google them individually and perhaps one stone at a time and syngergy. hopefully I'll come across more information about this, and if so, I'll try to remember to update here.