I created the Gem Shader by combining a principled BSDF Shader with a diamond shader created by Point Cloud: https://www.youtube.com/watch?v=CjXFuRoKBGM.
I created the Sci-Fi Material shader following a tutorial by NAM3D: https://www.youtube.com/watch?v=L-23Jzu6Hd0.
I created the Nebula in the Background following a tutorial by Joepavitt3d: https://www.youtube.com/watch?v=db-qfZBhBe4.
I created the Vignette effect by following a tutorial by Ryan King Art: https://www.youtube.com/watch?v=0RyaSB9qyL8.
I am currently using Blender 4.2, so I used a tutorial by Ryan King Art to recreate the Bloom effect for the Asset since it has been replaced with Ray-Tracing: https://www.youtube.com/watch?v=OhU-GV1CAF4.
Point Cloud's Channel Link: https://www.youtube.com/@PointCloud/videos,
NAM3D's Channel Link: https://www.youtube.com/@NAM3D.
Joepavitt3d's Channel Link: https://www.youtube.com/@joepavitt3d
Ryan King Art's Channel Link: https://www.youtube.com/@RyanKingArt.