The Selenite crystal on this mug was photographed in fluorescent light, and daylight.
Fluorescence is a type of luminescence caused by excitation of atoms in a material.
Daylight is caused when you open the curtains.
One hardly needs to ask - why have your tea in a plain white mug, when you can bask in the glow of some excited atoms coming from a crystal rose?
This specimen is 10cm and was found in the Red River Floodway, Manitoba.
11oz porcelain,dishwasher and microwave safe