Valuable and Safe-to-wear: Jadeite jade is rarer and more expensive than Nephrite, and its value increases overtime. Grade A means the jade is NOT treated by chemicals, thus is safe for your skin, compared to Grade B & C jade. Authenticity: Due to the nature of jade, each piece varies slightly by size, weight, and color from the image. Meaning: Jadeite jade is believed to have healing power and wards off evil spirits. This pendant is unisex. Quality: Q# is Dahlia's jadeite quality score based on clarity, color, texture, and transparency. The higher the Q number is, the better the jade quality. Due to the natural Grade A jadeite jade we use and the hand carved work, each piece may vary slightly by design, size, weight and color from the image Warranty: Dahlia assures that we truthfully present the product information and its product authenticity and quality. Dahlia is located in NYC and happy to assist your questions and concerns via phone and email