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Chalcedony
Main Deposits
Chalcedony deposits can be found all over the planet, but to name a few countries we can mention Brazil, the USA, South Africa and China.
Description and Characteristics
Chalcedony is a cryptocrystalline form of silica, composed of microscopic intergrowths of quartz and moganite, and is commonly found in cavities within volcanic rocks, hydrothermal veins and sedimentary deposits. It belongs to the trigonal crystal system and is distinguished by its fibrous structure and porosity, which allows it to occur in an infinite variety of colours and patterns; it differs from macrocrystalline quartz (such as amethyst) in that its crystals are so tiny that the stone appears compact and is often translucent with a characteristic waxy lustre.
| Chemical Formula | $$SiO_2$$ |
|---|---|
| Luster | Greasy, vitreous once polished |
| Streak | White |
| Fracture | Conchoid |
| Cleavage | Null |
| Hardness | 6,5-7 Mohs |
| Crystal System | Trigonal |
Did you know...?
It is believed that the name derives from Chalcedon (Chalkedon), an ancient Greek port city in Bithynia (now a district of Istanbul, Turkey). It was such an important trading centre for this gemstone in ancient times that it eventually gave its name to the entire family of microcrystalline quartz.
New-Age Properties
Chalcedony is a stone that enhances brotherhood and goodwill, fostering group stability. It can be used to enhance telepathy.
Chalcedony harmonizes the mind, body, emotions, and spirit. By instilling feelings of benevolence and generosity, it dispels hostility and transforms melancholy into joy.
Psychologically, it alleviates self-doubt and facilitates constructive inner reflection, creating an open and enthusiastic personality.
On a healing level, it increases physical energy, balancing the body, emotions, mind, and spirit.
The best placement for chalcedony is on the fingers, around the neck, or wherever appropriate for its intended purpose.
Chalcedony harmonizes the mind, body, emotions, and spirit. By instilling feelings of benevolence and generosity, it dispels hostility and transforms melancholy into joy.
Psychologically, it alleviates self-doubt and facilitates constructive inner reflection, creating an open and enthusiastic personality.
On a healing level, it increases physical energy, balancing the body, emotions, mind, and spirit.
The best placement for chalcedony is on the fingers, around the neck, or wherever appropriate for its intended purpose.
Uses of Chalcedony
Chalcedony is often used for decorative purposes, such as druses or other items (pendants, necklaces...), being a very showy mineral.