Gemstone: 4.45 ct Opal (Ethiopia) 17.7 x 9.4 x 5.4 mm, Untreated Metal: 1.28 g of Sterling Silver (Bail + Chain) Chain lenght: 45 cm Total weught: 2.04 g Our Commitments Quality Assurance: The authenticity and quality of our jewelry are guaranteed and every purchase is accompanied by a corresponding warranty card. Should any concern arise, it will be addressed promptly and transparently. Gemstones: Our gemstones are sourced from trusted suppliers, and, when appropriate, examined in our in-house laboratory. Packaging: Our jewelry is presented in high quality packaging — ideal to elevate every gifting or self-indulging experience. Shipping: Parcels are promptly sent via registered air mail with tracking. Higher-value items include insurance coverage.