Finger piercings are just part of the long list of growing jewelery and piercing trends, although this one does not appear to be too common yet.
I'm not sure whether the pictured ring was intended for a particular funtion, or if it was purely cosmetic, but either way, more creative adaptations will of course be possible.
Whether finger piercings catch on like nose or eyebrow rings or even tattooed rings remains to be seen, but if shock value is any indication, this one seems to have a good chance of sticking.
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