See all jewels with chalcedony...
Exists in a great variety of colours, usually blue-white, buff, light tan, grey, yellow, brown
OriginFrance, USA, Turkey, Slovakia, Island, Mexico, New Zeeland, Morocco, Russia, Brazil
VirtuesChalcedony is thought to boost vitality, endurance and physical energy. It is believed to foster maternal instinct, kindness and charity, and helps alleviate hostilities, irritability and melancholy.
SpecificationsChalcedony is a cryptocrystalline variety of quartz: that is to say, it is composed of so small crystals that they are hardly visible, even under an optical microscope. Chalcedony belongs to the group of oxides, and its formula is SiO2. Chalcedony is a translucent mineral with a vitreous luster, hardness 6 or 7, with a density of between 2.59 and 2.61. Its break is uneven, sketchy, conchoidal. Its crystalline system is rhombohedral, its luminescence yellow-green, yellow or white.
HistorySince chalcedony has always played a large part in the history of many civilizations, it is not surprising that its traces are found in the Jewish, Christian and Muslim religions, as well as in Buddhism. In the Bible, there is often mention of chalcedony. According to legend, the divine power of these stones goes back to their creation by God on Mount Sinai.
In the petrified forests of the American Desert Southwest, many of the original tree tissues have been replaced by chalcedony in the formation of petrified wood. What remains is a mineral replica of the original tree in various fantastic colours.
Many varieties of chalcedony have for long been used as gems, and some coloured varieties are cut and polished as ornamental stones. Native Indians are said to have used chalcedony during ceremonial activities of the tribe, as a sacred stone that promotes stability.