Here it is, the Sapphire Stone model.

It works in Source Filmmaker and Garry's mod.
Let me know if there are any problems.
Download [For SFM/GMOD]:
    Download

Model name

props_pony/sapphirestone

Credits

Model/texture - Nein-Skill
V3 Shading vmt - Yukitoshii

Everyone may use/modify this model however they want for non-commercial purposes.