These are simple earrings and a ring. But with a holographic surface, the illusion of turning blocks-cubes is created.
The video shows it better:
I again used the holographic principle that I showed in previous projects Vasarelli, Pulse and Heartbeat:
https://www.prusaprinters.org/prints/45922-set-of-earrings-with-holographic-animation
https://www.prusaprinters.org/prints/45369-pulse-holographic-surfaces-for-jewelry
https://www.prusaprinters.org/prints/46482-heartbeat-childrens-jewelry-with-holographic-anima
All models can be slightly reduced or enlarged.
Usually I do projects that do not need support, but here they are appropriate for the ring (it is worth removing the supports for the outside). But a little brim should be done for the earrings.
For printing, you should choose the most shiny plastic, for example, the one called Silk. However, it even works on regular black PLA or PETG, if you slow down the speed a little or increase the temperature. I think dark shiny materials have a slightly stronger effect than lighter ones.
Layer thickness 0.2 mm, width 0.45, nozzle 0.4 (I think it is possible to make a smaller layer thickness and height, but I have not tested this). The parts are small, so it is better to choose a small speed, for example, 20-40 mm / s and turn on the cooling.
The slicer can detect some "errors" in the model - this does not affect the result in any way. In addition, PrusaSlicer fixes them automatically.
The author marked this model as their own original creation.