W501 "Hawkeye" bit with added blue zircon colored crystals. "Hot-fix" type crystals used.
A tiny (5ss size) crystal was super-glued to the underside to create a little "locator" nub, that assists the bit in lining up with the corners of the model's mouth.
W418 "Concho" bit with added gold conchos, illustrating how the size of concho chosen affects the overall look.