There are these pillars that I found once, while somewhere on the Appalachian Trail in Virginia, that were perfect octagons on top. I wrote on my hand to ask about them at the next park ranger station, but then got that after dark, and anyway, it turns out it's the same kind of stone that made the giant's causeway in Ireland which at the time I'd never heard of, but saw pictures later and remembered about that note I wrote to myself!
All pendants come with the chain with which they are pictured. Most chains are about 17inches long, and will fall about midway between the neck and the decolletage on an average woman. We realize that measurement is a bit biased; our pendants are unisex and we are happy to provide longer chains if desired.