I inherited several crystal port and sherry glasses from my maternal grandmother. They have multi-faceted stems, so I decided to get the iPhone camera as close as possible and capture the light that came through.
The iPhone camera captures reds very well, no matter the light source.
By moving the camera lens ever so slightly I was able to capture a longer string of red and white lights.
The facets of the crystal stem that I was shooting through created all sorts of interesting strings of light.
In addition to the reds and whites that refracted within the crystal, some blues appeared at the very end.