Green Aventurine Gemstone 14K Gold-Plated Sterling Silver Lobster Clamp Closure Length: 7"  Extender: 1" Natural color may vary  Quartz possesses the power to amplify intentions, promote mental clarity, and enhance spiritual insight. Tourmaline is a protective and grounding gemstone that aids in energetic cleansing, shielding against negativity, and promoting emotional stability, allowing for greater clarity and serenity.