This raw Black Tourmaline crystal necklace set in 14k yellow gold vermeil may be worn at any time of day. It's versatile enough to be worn with almost anything. Keep this crystal with you to help you stay grounded and secure. This beauty not only repels and protects against negativity, but it also protects against being victimized by the negative energy of others, while also increasing physical vitality, emotional stability, and intellectual brilliance.