For the hexagonal extrusion: "Glass Heavy Frost Bright White" material, transparency distance changed to slightly more than the wall thickness of the extrusion.
Playing with Transmission color and Refractive Index yields variations.
For the LED: Object with material set to Area Light, contained within the hexagonal extrusion, leaving a large gap between inner face of extrusion and LED object itself. Area Light material set to not be visible to camera. Area Light power set to 0 gives a lights-off daylight view of the fitting.
Exposure adjusted to -1 EV to avoid the lights being blown out. Caustics enabled. No Photoshop involved.
KSP is attached.