Instagram / @grimes

Grimes is showing off her new ink ... a fresh tattoo on her face.

Check it out -- the Canadian musician, whose real name is Claire Boucher -- proudly posted her brand new design on Instagram Wednesday, gushing to fans she spent a decade "emotionally working up to a face tattoo." Gallery Launch Gallery Getty

The unique tat is a reddish-brown circle that wraps around part of her left eye and the side of her face. It almost resembles a birthmark ... and Grimes mentioned her parents didn't even notice her new piece of art, reasoning ... "I guess I drew on my face too much."

The " cybersigilism " tattoo -- an emerging style that blends ancient symbolism with digital aesthetics -- was done by an artist known as Glyphomancer. Grimes gushed over the artist in

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