Chalcedony

Interesting facts about chalcedony:

The term chalcedony is derived from the name of the ancient Greek town Chalkedon in Asia Minor.

n jewelry usage, the name Chalcedony is usually applied only to the light blue translucent and waxy form.

Chalcedony is found in almost every color including: white, gray, black, brown, brownish red, orange, yellow, light to dark green, blue, lavender or, in the case of agates and jaspers, combinations of those colors.