Description & Details They're thought to promote the flow of good energy and help rid the body and mind of negative energy for physical and emotional benefits. Historically speaking, crystals are touted as ancient forms of medicine, with philosophies borrowed from Hinduism and Buddhism. • Material: High Quality Copper ∙ Natural Crystal Raw Stone • Finish: Hypoallergenic ∙ Gold Plating • Dimensions: 40 - 45 cm chain, adjustable • All our work is custom made by hand with love