Tourmaline Ring, Black and Pink Crystals, 925 Sterling Silver, k5A raw Black Tourmaline crystal along with two pink Tourmaline nuggets is set as a ring in 925 Sterling Silver with an open bezel setting. Tourmaline is famously the most energising of all crystals and gemstones. It increases the flow of energy along all your energy lines which both unblocks them and gives stamina to achieve long term goals and overcome obstacles. Black tourmaline is centred primarily on the physical plane. Hence it's a great favourite