Gemstone: 4.22 ct, Ethiopian Welo Opal, 15.0x11.0x5.5mm, Untreated Metal: 2.846 g of Sterling Silver Ring Size: 7 Total weight: 3.69 g - OPAL colors arise from light interacting with the stone’s structure. Flashes of color vary with angle and lighting intensity, and photographs aim to capture different perspectives of the play of color – more and less intense. QUALITY: From gemstone selection, metalwork, photography, provided measurements and description - we strive for quality and transparency (this is more uncommon than it seems!) Should any concern arise, it will be addressed and resolved promptly. Every purchase is accompanied by a corresponding warranty card. GEMSTONES: Our gemstones are sourced from trusted suppliers, and, when appropriate, examined in our in-house laboratory. We do not work with synthetic stones. PACKAGING: Our jewelry is presented in high quality packaging — ideal to elevate every gifting or self-indulging experience. If you would like to include a custom message on the accompanying card, for gifting or other purposes, please submit it via Catawiki’s messaging system after the auction ends. It will be included at no additional cost. SHIPPING: Parcels are promptly sent via Express/Priority air mail with tracking. Higher-value items include insurance coverage.