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The Encylopedia of gems in English is still under construction. Thanks to visit the encyclopedia of gems in French.
Chalcedony is a variety of quartz.
It can exist in various shades. The chalcedony that originally came from Turkey is blue. The green limestone is Chrysoprase. The orange chalcedony is Carnelian. The black chalcedony is Onyx.
Care of chalcedony: It is very suitable for steam or ultrasonic bath cleaning.
Learn more about chalcedony, Voir Mindat.org->
The trade in chalcedony already existed more than 500 years before-J.C. It was fashioned into ornamental objects such as amulets or seals. In ancient times was associated with Neptuitne because of her blue.
Today, limestone is widely used in jewellery to give softness to créations!
