For the dust gained from Ithell harps, see Harmonic dust.
Harmony dust will be an ingredient used with a juju fishing potion to make a perfect juju fishing potion. It can be obtained by grinding down small, medium or large crystal urchins.
This item is not to be confused with the harmonic dust gathered from playing the harps in the Ithell district, as the two different types of dust cannot be used interchangeably.