 MG1190 |
CANDY STRIPED Origin: California, USA Price: $38.00 |
 MG118 |
WHITE LACE Origin: Northern Mexico Price: $18.00 |
 MG0966 |
FLAME
AGATE Origin: USA Price: $45.00 |
 MG0705 |
BLACK
SKINNED Origin: Brazil Price: $14.00 |
 MG0964 |
STINKWATER Origin: Oregon, USA Price: $15.00 |
 MG1185 |
IRIS TRIANGLE Origin: USA Price: $20.00 |
 MG0673 |
CRAZY LACE Origin: Chihuahua, Mexico Price: $18.00 |
 MG964 |
MONTANA
MOSS Origin: Montana,
USA Price: $10.00 |
 MG0649 |
RED COYOMOTO CABOCHON Origin: Mexico Price: $36.00 |
 MG0763 |
BLUE
LACE Origin: Mexico Price: $10.00 |
 MG0523 |
DENDRITIC
OPAL Origin: USA Price: $22.00 |
 MG042 |
QUETZACUATL Origin: Mexico Price: $14.00 |
 MG049 |
HORSE CANYON AGATE CAB Origin: California,
USA Price: $12.00 |
 MG0766 |
RAINBOW AGATIZED WOOD Origin: Arizona, USA Price: $18.00 |
 MG0877 |
ROSETTA Origin: California, USA Price: $18.00 |
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* plus shipping and handling from Mexico.  |
Agate,
a semi-precious stone, a microcrystalline variety of quartz,
its main make-up is chalcedony, with its fine grain and bright
colors. Although agates may be found in various kinds of rock,
they are mainly associated with
volcanic rock, but can be commonly found in certain metamorphic rocks. Most
agates occur as nodules in ancient volcanic rocks, formed in
cavities originally produced by the disengagement of gasses
in the
molten lava mass
which were then filled by silica matter deposited in regular
layers upon the cavity walls. Such agates, when cut exhibit a
succession of parallel lines, often giving a banded appearance
to the slice. The first deposit on the wall of a cavity, forming the "skin" of the agate, is generally a dark mineral substance like green earth, which are rich in iron, derived from the decompositions in the enclosing volcanic rock formation. This green silicate may alterate to a brown iron oxide, producing a rusty appearance to the outside of the agate nodule. |
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