Koi Fish Screw Back Earrings in Sterling Silver, Silver or Gold or Rose Gold, Koi Fish Earrings Sold as a pair. Dimensions : 12mm long koi. Screw Backs (with balls): Post length is 6mm, 0.9mm thick (fits 18 gauge). Studs (with butterfly backs): Post length is 11mm, 0.7mm thick (fits 20 gauge). Materials and Care: These are made of sterling silver, with the option of 18ct gold plating or 14ct rose gold plating. Only precious metals are used and they are hypoallergenic. Please keep in a sealed plastic bag when not wearing. Packaging: All our jewellery comes with our branded velvet bag so your item is ready to be gifted. Production Method: Small Batch lost wax casting. ------------------------------------------------------------------- Free Shipping for UK orders. International orders with a flat postage fee. All our items are ready to ship within 48 hours. Orders arrive within 5 working days for UK orders and international delivery time varies but generally 1 - 3 weeks. More details about our production method https://www.silverrainsilver.com/blogs/production-methods/production-method-1-lost-wax-casting Instagram: silver_rain_uk