Metaphysically it is a cleanser crystal and has the ability to cleanse any form of blockage either at physical or energy level.
Primarily a water element it brings lucidity in thoughts and ability to gain knowledge from different planes if channeled through the third eye.
Blue Kyanite Cluster Tea Light Holder can be also used to enhance intuition and develop psychic abilities. You can use this crystal Diya to address blockages of any form and over a period of time you would see it dissolving.
This Kyanite Tea Light Candle Holder crystal is also a protection crystal in sense that is helps to channel excessive energies to water and thus maintaining desired balance.