Just a glasball in front of a lamp.
Background: black paper
Basement: carbon firbe
And it's a HDR:
Qtpfsgui 1.9.3 tonemapping parameters
Operator: Mantiuk
Parameters:
Contrast Mapping factor: 0.1
Saturation Factor: 0.8
Detail Factor: 1
------
PreGamma: 1
Used here as reference:
great job!