Wholesale Black Tourmaline Hearts 1.5"-2.5" - 1 kg

Black Tourmaline Hearts 1.5"-2.5" - 1 kg • Approximate Size: 1.5” to 2.5” • Approximate Amount: 8 to 12 pieces • Origin: India • Chemical Formula: NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄ • Mohs Hardness: 7 • Chakra: Root • Metaphysical Association: Balance, Grounding, Protection Black tourmaline makes up roughly 95% of all natural tourmaline on Earth. It is a unique silicate mineral with fascinating scientific properties. Black tourmaline is used in technology primarily due to its piezoelectric and pyroelectric properties. These properties allow it to generate an electrical charge when subjected to mechanical pressure or temperature changes, making it valuable in highly sensitive measuring and sensing equipment. Note to Buyer This is a "random selection" listing. You will not receive the exact item photographed in the listing, but one that is very similar. Size, shape and color may vary slightly. Please check item descriptions for product-specific details. If you have certain requirements please contact us.