Each necklace contains 100% pure essential oil and is engineered to resonate and harmonize your being through aromatherapy and Reiki-infused light. Each glass bottle also contains a programmed crystal to heighten the intention of the oil blend. Use as a perfume instead of harsh chemicals, without opening bottle. While wearing, the oil blend gently breathes through the cork top. Necklace has an adjustable strap. Handcrafted by Amber Wilcox Batt.