ORTAS
Nice job. Very good choice for the background.
Diamond Ring on Velvet Blender Cycles Scene with PBR shaders.
This scene is render ready with no post processing used in the preview images. All images are direct output of Cycles renderer. The scene comes with 360 degree studio HDRI background.
Three PBR shaders are set up in Blender Cycles, one for Silver, one for Diamond and one for background cloth.
The Diamond Ring and background cloth has subdivision modifier that can be adjusted. The wireframe previews show non-subdivided geometry. DAE, FBX and OBJ formats have non-subdivided geometry ready for subdivision. The background cloth has UVs.
Geometry:
The ring has 36,726 faces and 39,108 vertices. Mostly quads. No n-gons, co-planar faces or isolated vertices.