Tourmaline gemstone is a semi-precious mineral similar to granite. With colors ranging from magenta to teal-blue, meadow-green to vibrant yellow, and even black, tourmaline gets its name from the Singhalese phrase tura mali, which means, "stone mixed with vibrant colors. It s believed that no two tourmaline stones have the exact same color and it s historically revered as a 'magic' stone capable of protecting whoever wears it. Care Instructions Detergents and lotions can damage the finishing and colour of the stones / crystals. * Jewellery should always be removed before swimming and washing dishes. * Clean with soft 100% cotton. Disclaimer: The information provided is intended as a reference of the metaphysical and healing energies of the crystals. Their healing powers are not established and cannot be guaranteed. Crystals should never be used as a substitute for conventional medical or psychological treatment.