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Chalcedony is member of the quartz family. Chalcedony is the name given to all cryptocrystalline quartz, a complicated name that refers to the tightly packed microscopic crystals that make up the gem.Chalcedony contains layers of tiny quartz fibers that accumulate on top of each other to give a banded appearance.

The varieties of chalcedony are divided more by character than by color. Chalcedony is divided into a host of gemstones that have been named for locally common varieties.


Chalcedony encourages the wearer to be more responsive and receptive.Stimulates maternal feelings and creativity.Wearing chalcedony is believed to be excellent for the eyes. Chalcedony prevents from touchiness and melancholy.

Physical Properties:


Chalcedony   Birthstone

blue-white, buff, light tan, gray, yellow or brown.
6.5 - 7.0
Specific Gravity
Refractive index
1.544 - 1.553

Sign of Chalcedony: Virgo

Stimulates optimism and enhances one's spiritual and artistic creativity. Blue chalcedony has a gentle energy which balances mind body and spirit whist reducing hostility and irritation. Brings love and comfort. Beneficial for businesses.


In ancient times Chalcedony was used in cameo making
because of its beautiful color and it's engravable surface.
Early man made weapons and tools from many varieties

of chalcedony including agate, agatized coral, flint, jasper, and petrified wood.


Chalcedony occurs in India, Madagascar, Burma, Brazil, Mexico and the USA.