Sterling Silver Emerald Green Marquise Screw Back Earrings/ Stud Earrings, Simulated Emerald Crystal, Minimalist Design, May Birthstone Sold As A Pair! Dimension: 3x7mm. 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). These earrings are made with Cubic Zirconia crystal and solid sterling silver and coated with precious metal Rhodium or 18ct yellow gold. Both versions are hypoallergenic. Production method: Small Batch Lost-wax casting. Packaging: All our jewellery comes with our branded velvet bag so your item is ready to be gifted. More details about our production method https://www.silverrainsilver.com/blogs/production-methods/production-method-1-lost-wax-casting Instagram: silver_rain_uk