Metal: 925 sterling silver Main stones: 8 natural emeralds, totaling approximately 4 carats Size: 17 cm, adjustable The metal parts of this item are made of 925 sterling silver with an 18K gold plating. The main stones are 8 natural emeralds. Emeralds are typically treated with a clear oil to enhance their clarity, which is a common international practice that does not affect the gemstones’ properties. Shipping: We deliver via UPS, Royal Mail, DPD, and other logistics providers. Delivery times depend on your local postal system, but most orders within Europe arrive within 5 to 7 business days.