Xostyrka
It first shader for cycles that do the job for gemstones material, even in compare to Luxcore. Great work!
In the preview there are two YT videos where you can see the result.
If you think that rebuilding the shader is too complicated, takes too much time or if you just want to support my work, you can buy the complete Blender scene - as it was used for the demo video - for a small amount of money here.
The special shader (as it will be built in Part 3) is already included and ready for use. In the video series you can follow everything from scratch.