A stunning sterling silver ring inlaid with a Green Quartz. PRODUCT DETAILS. Category: Ring. Material: Sterling Silver. Stone: Green Quartz. Weight: 2.3 grams. Dimensions: 6 mm wide. Stamp: 925. Condition: New without tags. CARE & INSTRUCTIONS ABOUT STERLING SILVER & VERMEIL JEWELRY. Sterling Silver tarnishes on prolonged exposure to air and water. It should be kept away from chemicals like hairspray & perfumes. It should be stored in Ziploc bags or cloth pouches. Occasionally clean the vermeil lightly with a soft cotton cloth or cotton ball. Do not use abrasive cleaners or liquid cleaners.