I can send you the PSD file if you want?
Screen = Simple Gradient
Border and stand = A gradient that has lots of stops in the middle to change the colour which gives it a glossy effect.
Neon Circle = Elliptical Tool to select the circle, filled, then set to transparent fill, The glow can be added using the inner and outer glow options in the layer's blending options.
If you're using Gimp I don't know what the equivalents are.