Hello, it's Adrian!
The Holographic Series continues! My upcoming tutorial will focus on creating a pearl material in Octane Renderer. After that, stay tuned for tutorials on CD Disc Material and Iridescent Material.
EDIT: Changed the image because I discovered a more efficient workflow. This results in more realistic material, better light scattering, and softer shadows in areas with less light. Plus, rendering is now over two times faster!