What Is This Symbol, You Ask? Well a Ouroboros of course http://www.refinery29.com/snake-jewelry#slide5 Rachel Entwistle Ouroboros Snake Ring, $150, available at Wolf & Badger.
Ouroboros by Simon Erl (@ simonerl)
Thelema is a spiritual philosophy (referred to by some as a religion) that was developed by the early 20th century British writer and ceremonial magician, Aleister Crowley.
Amazing Photos Reveal How the Natural World Copies Itself | WIRED
Ouroboros - Google Search
Ouroboros Autocollants, Stickers Ouroboros
Full lockups / concepts in the attachment...