Purple CZ Droplet Internally Threaded Flat Back/ Screw Back / Stud Earrings in Sterling Silver, Silver or Gold or Rose Gold Sold as a pair. Dimensions : the droplet is 3x5mm Flat Back (Internally Threaded): Post length is 8mm, 1.1mm thick (fits 16 gauge). Screw Backs (with balls): Post length is 6mm, 0.9mm thick (fits 18 gauge). 4mm balls. 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. 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. More details about our production method https://www.silverrainsilver.com/blogs/production-methods/production-method-1-lost-wax-casting Instagram: silver_rain_uk