The wearing of amulets is a symbolic practice associated with medical diagnosis. An amulet may be made containing particular mantras, such as an elemental mantra or a protector mantra, or they may also contain herbs or medicine.
Amulets are usually quite small so that they can be worn without being an encumbrance, but we started by making fairlylarge ones—around 10cm square—to begin with. The designs include eternal knots, mandalas and yung-drungs. The yung-drung (Tibetan gYung drung –swastika in Sanskrit) is an ancient Buddhist symbol of increase or decrease, depending on the direction.
and this bellow pictures is Guru Rinpoche Chakra made by Rinpoche before to make a Guru Rinpoche Puja in their monastery.
this is blessed by Drodupchen Rinpoche and other tulku in sikkim.