X-BAND COLLECTION Innovative and expandable eternity rings by Mattioli. The feeling of a tailored fit and the timeless elegance of eternity rings. X-Band reinvents and innovates traditional engagement rings with white diamonds, to make them unique and comfortable. Elastic eternity ring in white gold with white diamonds Elastic eternity ring in white gold with white diamonds Elastic eternity ring in white gold with white diamonds Elastic eternity ring in white gold with white diamonds Elastic eternity ring in white gold with white diamonds Elastic eternity ring in white gold with white diamonds Elastic eternity ring in white gold with black diamonds Elastic eternity ring in white gold with black diamonds Elastic eternity ring in white gold with black diamonds Elastic eternity ring in white gold with blue sapphires Elastic eternity ring in white gold with tsavorites Elastic ring in rose gold with pink sapphires Elastic bracelet in white gold with white diamonds Elastic bracelet in white gold with black diamonds