TOUS MANIFESTO earrings are versatile pieces that are unbelievably easy to wear. This timeless jewelry adds the perfect personal touch to your looks. TOUS MANIFESTO earrings with 18kt gold plating over silver and with onyx. Size of the gemstones: 3 mm. Earring size: 27.6 mm. Push back. It is made of sterling silver with 18 to 23kt gold plating and has a thickness of 3 microns. This quality guarantees a greater durability of the jewel.