Chalcedony is a variety of quartz. The origin of the name is connected with the old town Chalcedon in ancient Greece. It has milky, light blue, opal, or amber-grey color varieties.

There are more than a hundred forms of chalcedony; for example, chrysoprase, cornelian, flint, agate, and onyx. The stone brings happiness and love and drives away anguish. It absorbs and disperses all negative energy.