Chalcedony earrings best silver 925%

Chalcedony best earrings
rhodium silver 925%
crafts made in italy
stone- 2x1,4

Chalcedony /kælˈsɛdəni/ is a cryptocrystalline form of silica, composed of very fine intergrowths of the minerals quartz and moganite.[2] These are both silica minerals, but they differ in that quartz has a trigonal crystal structure, while moganite is monoclinic. Chalcedony's standardchemical structure (based on the chemical structure of quartz) is SiO2 (silicon dioxide).