Comparing Rhinestone Crystal Quality

Comparing the quality of rhinestone crystals; in this case:
Swarovski vs. Preciosa vs. Blue Nil vs. DMC vs. Korean "Professional" rhinestones.
All crystals used in this video are hot fix flatbacks, color "Crystal", size SS16.
Cameras used for recording: Nikon D5200 and Nikon D3200, converted to 700nm infrared.