Tuesday, 18 December 2018
ONYX is formed of bands of chalcedony in alternating colors. It is cryptocrystalline, consisting of fine intergrowths of the silica minerals quartz and moganite. Its bands are parallel to one another, as opposed to the more chaotic banding that often occurs in agates.
   
White Onyx Green Onyx Honey Onyx Orang Onyx