Nine bone meshes are arranged into the letter N in front of a slab that carries the same letterform. Both use the drei MeshTransmissionMaterial, so the glass refracts what is behind it and splits the edges into red, green and blue fringes. The scene is three.js through React Three Fiber, lit by a spotlight and a point light and slowly auto-rotated on a white stage.
One of all WebGL demos by Niccolò Fanton, from the portfolio of Niccolò Fanton. The full source code for this demo is on GitHub.