20mm "Emerald" Swarovski Rivoli Round Crystal Rhinestone Pierced Earrings - USA Made Made with Authentic Swarovski Elements. Nickel Free and Lead Free, Made in the USA! This shade of Emerald is very bright, surround crystals create a beautiful sparkle! 20mm size of each earring is that of a nickel, we do offer a smaller size of 15mm. Please take the time to read the product description for more details.