HEALING PROPERTIES:
Agate is the stone for self-expression,
creativity, health and good fortune. It makes it much easier to open up oneself.
Soothes emotions and pain. Sensitizes and attunes senses. Helps to develop powers
of eloquence, self-confidence and public-speaking. It is believed to be of special
benefit to athletes and to those taking any kind of examination or test - mental
or physical. It eases a sore throat and takes away the hoarseness. This stone
also works directly with the nervous system to alleviate physical tension and
is said to be a treatment of arthritis, skeletal conditions, and as an aid to
digestion. General healing, reduces fever, hardens tender gums, gives courage
and banishes fear.
PHYSICAL
CHEMICAL PROPERTIES:
Agate comes in most colors. Agates
range from transparent to opaque in a variety of beautiful colors. Agate
presents various tints in the same specimen. The stones can be artificially
stained to produce combinations of color more vivid than those found in the
natural state. It is a semipellucid crystallized quartz, consisting of banded or
with branching inclusions chalcedony. Physical properties of agate are in
general those of quartz. Agate has irregular, sometimes circular bands of color
and often replaces fossil wood. Many fossils are agatized material where the
original organic substance has been replaced by agate while retaining the
original structure. Agates are identical in chemical structure to jasper, flint,
chert, bloodstone, and tiger-eye, and are often found in association with opal.
The colorful, banded rocks are used as a semiprecious gemstone and for making
mortars and pestles. One will often see these in beads, agate pendants and
necklaces.
Agate |
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Chemical Formula | SiO2 | Hardness | 7.00 |
Specific Gravity | 2.61 | Refractive Index | 1.53 - 1.54 |
ORIGIN HISTORY:
Agate was discovered with the
Stone Age man in France 20,000-16,000 BC. The Egyptians used it prior to 3000
BC. Agate was highly valued by ancient civilizations. Said by the ancients to
render the wearer invisible.
The agate-working industry grew up centuries ago in the Idar-Oberstein district
of Germany, where agates were abundant. Cameos are cut from stones, such as
onyx or agate, where different colors occur in layers. The background material
is cut away, leaving the cameo design in relief. Agate is one of the gemstones,
that used in commesso, also called florentine mosaic. Commesso is a technique
of fashioning pictures with thin, cut-to-shape pieces of brightly colored, semiprecious
stones, developed in Florence in the late 16th century. The stones most commonly
used are agates, quartzes, chalcedonies, jaspers, granites, porphyries, petrified
woods, and lapis lazuli. Commesso pictures, used mainly for tabletops and small
wall panels, range from emblematic and floral subjects to landscapes. Agate
derives its name from the Greek "Agateес" - meaning
happy. According to another theory the word Agate comes from the Greek
name of a stone found in the Achates River in Sicily, now known as the Drillo
River, which still remains a major source of this stone.
GEOGRAPHICAL DEPOSITS:
Important sources of agate are
Russia (Ural mountains), Brazil, Egypt, Germany, India, Italy, Madagascar, Mexico,
Uruguay and the USA (Oregon, Washington, Idaho, and Montana).