Each piece is hand sculpt to preserve its own natural beauty. This salt crystal holder is made from rock salt sitting deep under the Himalayan Mountains for thousands of years, and is a one-of-a-kind gift colored by nature. It is Nature’s Air Purifier. The warmth and glow from the tea light candle bring about a wonderful reaction with the natural crystal salt. It causes negative ions to be emitted in the air clearing out positively charged particles that make us stuffy and sluggish.