TOUS Glaring ring in silver vermeil with 4 mm onyx bear and two 3mm zirconias. Sterling silver plated with 18kt gold with a thickness of 3 to 5 microns and with no other metal between them. Production technique: Casting. Quality Certificate: 925 sterling silver plated with 18kt gold. To ensure your TOUS silver vermeil jewelry always sparkles like new, at TOUS we offer a gold plating and restoration service.