I'm a jewelry designer Sabush Rasulov

[Sabush]

Earrings designed by me in zbrush and rendering in keyshot

[Maziyar]

which kind of lighting used ?
and what was the preset ?

[Josh3D]

Really natural appearance. Looks great. The textured surface they're on is a little distracting though - may want to try some others or reduce the scale/bump height a bit.

[jogeshocp]

Jewelry design is just awesome. Thats are look so natural.