In V-Ray is when you use a high reflection glossiness, keeping the values below 0,8, which is very important to increase the subdivs level. In this project I used a low value (16), because it was a very bumpy surface and it "hid" the low resolution of the shader. On polished surfaces it is better to use higher values, like 32+, because if you don't you will have a very grainy reflection. Another tip@ I used some yellow on the reflection color as it gave me a golden look (Fig.08).
Once the shader was done, it was time to render the final image. It was rendered at 4000 x 3000 pixels and it took around 1-2 hours to complete. I used a Gamma setting of 2,2 on the scene and rendered lots of passes, but I used just three: the beauty render, the ZDepth and a V-Ray Raw Reflection. These helped me a lot with the composition, giving me control over the highlights.
I used some Curves and adjustment layers in Photoshop to increase the image's contrast the way I wanted and added some dust after that (Fig.09).
This project didn't take me lot of time; it was a fast study and I really enjoyed doing it (Fig.10)!
I hope that you liked this tutorial!