This item is sold by cases of: [6] items.As salt candle holder warms up it emits negative ions into the air. Negative ions cause harmful air particles to clump together and fall to the ground. This process may help relieve symptoms of Asthma, Sinusitis and common allergies. In addition to these health benefits, this salt candle holder makes a very unique, healthy and beautiful gift. Every piece is distinctly hand carved to retain unique natural look and beauty of salt crystals, so no two salt candle holders are alike. Note: Due to nature of salt products, size and weight may vary.