As follows:

1. The background is any color, open the picture and copy it in.

2. Then use the Ellipse Tool to draw a selection, delete the unnecessary parts, and make a backup copy (hidden layer).

3. Perform a bevel and embossing on layer 0 - set the size and contours.

4. Display the copied copy layer and wipe off some edges with an eraser.

5. Reference, post-production effects.