The 3D model of redstone was originally done by Noevon. His edged redstone pack and a link to his profile are listed below. I was given permission from him to use his models. I simply re-textured the redstone to have an RGB look to it. I'm Considering re-texturing all redstone items and blocks but for now I only have the redstone done.

Noeven's Account - https://www.planetminecraft.com/member/noevon/
Edged Redstone 1.15 - https://www.planetminecraft.com/texture_pack/edged-redstone/

If there's issues with the download please let me know. Thanks.