【Multipurpose Gemstones】: Can be used for tumbling, jewelry making, fountain rocks, chakra energy balance, decoration. Also makes a perfect gift for yoga, meditation lovers, crystal beginners, crystal collectors. 【Stone Specifications】: size is 4~5cm/1.5~1.96inch, weight is 453g/1lb. 【Black Tourmaline】: brings emotional stability and courage while relieving stress and anxiety, clearing mental confusion and correcting imbalances in thought patterns. They bring peace of mind and tranquility and encourage relaxation, leading to a deeper connection with the spiritual realm. 【Natural Properties】: The raw stone raw materials are mined from nature, preserving the original natural energy. Suitable for energy healing of mind and body. 【Please Note】: Due to the nature of the gemstone, the color and shape may vary slightly from the picture. If you have any questions about your purchased product, please contact with us。 We will serve you wholeheartedly. Can be used for tumbling, jewelry making, fountain rocks, chakra energy balance, decoration. Also makes a perfect gift for yoga, meditation lovers, crystal beginners, crystal collectors.