Ring

Support Modeling
1

I have tried yo unwrap this mesh,

ring.jpg1024×620 60.1 KB

but How to make seams? Have tried several variants, but result is always this
unwrap.jpg645×633 80.3 KB

2

Is the texture you are planning to use round like the mesh? If it is, I would simply unwrap using the “Project from View”, and make sure your view is facing the mesh.

3

it’s a normals issue. in the 3D window, in edit mode, select all and hit ctrl N ( recalculate normals outside )