Singing crystals are typically quartz spears that make a high pitched tinkling sound when rubbed or rolled together. These are used for energizing stagnant energy and shaping energy fields. Harmonizes the higher energies of the aura & spiritual body. Measure 10-30mm. Metaphysical properties are provided for your information and are not meant to replace the advice of a qualified physician or medical practitioner. Due to the nature of this product, color, size, and shape will vary.