Earrings from the collection "Nature's Treasures" in pure silver plated with 18K gold (Vermeil). The Nature's Treasures collection was inspired by the feel and textures among the treasures you can find in nature. The textures created will spin the imagination towards treasures dug up from the ground deep in the woods, or found diving in the deep blue sea. The collection is a declaration of love for the perpetual yet ever changing and evolving nature. A study in the perfectly imperfect. All Iselin designs are handmade and differ slightly in appearance. All Iselin designs are hand-made in Norway. This item is made of Sterling silver (925) and Pure silver (999), plated with 18K Gold (2, 5 microns). We recommend taking good care of your 18K Gold Vermeil treasures by: - Removing your jewelry before you swim in chlorine or salt water. - Removing your jewelry before participating in activities that will cause you to sweat a lot. - Waiting to put on your jewelry until after you have applied lotion, makeup or perfume. - Removing jewelry if you will be bringing it into contact with something hard. (For example, take off your ring before lifting weights.) - Storing your plated jewelry where it won’t rub against other hard substances (a soft bag—one per piece of jewelry—is ideal). Wipe your gold plated jewelry after each use, using a soft cloth to remove any dirt or debris. You may also soak it for a few minutes in warm, soapy water and dry it with a soft cloth as needed (or a soft toothbrush to clean small cracks and crevices). All Iselin jewelry have a core of Pure Silver (999) or Sterling Silver (925) and are plated with at least 2. 5 microns of 18K Gold. Microns is a measure of the thickness of gold that is deposited to the silver piece. The industry standard is 0, 5-1 microns for Gold Plated jewelry (it must be at least 0, 5 microns to be allowed to be called "Gold Plated"). "Gold Vermeil" (as all our gold plated designs are) has to have a core of precious metal, and have at least 2, 5 microns of gold plating. Due to its thicker gold layer, Gold Vermeil is a very durable option for jewelry pieces. Should your jewelry still at some point become tarnished beyond what a good cleaning can remedy, all is not lost. You can breathe new life into your jewelry by having it re-plated. Please don't hesitate to contact us, and we can make you a good offer on re-plating.