This is a sculptural element from the Casa Battlo resident stairway, by Gaudi, in Barcelona. One that fits into the end of the stairway's ramp, on each floor of the atrium, as well as in the lobby. The circle enclosing the shark jaw shaped triangle form (had to come up with a name for this thing) is twisting 3 times. No idea how they did it manually in 1904.
A free sample of the 3d models I'm making while learning about 3D polygon editing, using the Casa Batllo, one of my favourite buildings ever, as a reference mine for exercises. Native model in 3dsmax 2021, made by using edit poly and turbosmoothing mostly. One version of the ojects in in its final form, the other in its 'work in progress' form to be adapted or looked at if you want.
Covered in silver, it could make for a cool necklace, too. A model integrating the sculptural elements of this stairway's ramp is available in my Gaudi Collection (see the last preview image).
Hope you'll enjoy this one.