✅ Stones are approximately 20-25 mm long. Chose between 1, 5 and 10 stones. ✅ Please allow for slight variations in size, shape and color as these are a natural product ✅ A powerful protection stone, Black Onyx absorbs and transforms negative energy, and helps to prevent the drain of personal energy. This makes Black Onyx a great choice to encourage happiness and good fortune. ✅ Black Onyx aids the development of emotional and physical strength and stamina, especially when support is needed during times of stress. ✅ Precious and Semi-precious gemstones have been used since recorded history and probably before, for spiritual, emotional, and physical healing. Healers all over the world are using them. It is not to be used as a prescription, diagnosis or treatment. The information given is purely metaphysical in nature and is by no means medical.