Creeksong

I wonder if the glass blower got the inspiration from those cave swallow nests than look like they're made from the most fragile glass.... and, unfortunately, are most famous because they're the main ingredient in bird's nest soup (yuck!).

It must look amazing with light shining through it...

Set the camera up for tungsten lighting, turn off the flash, set ISO to auto... Set the ornament down on a dark, non-reflective surface (a dark colored towel works great). Use a flashlight to shine a beam on the deco from above.... Darken the room.... Take a few shots in macro & normal modes, avoiding angles directly into the beam of the flashlight. Be sure to give a bit more distance than if you were shooting in daylight to avoid light trails. I think you'll get the desired effect.

Hope you don't mind the unsolicited advice ;)

Well.... There's always next Christmas ;)