Direct Shopping Network is revamping the
"opal section" of our website. Look here starting this weekend for new and
exciting opals. Every day new opals will be made available
Opal is recognized as
October’s birthstone and the fourteenth
year anniversary gemstone. The opal is very distinctive within the world of
gemstones. Many gem collectors develop a true passion for opals. The interest in
opals is not limited to the vast rainbow of obtainable colors and individuality
of every stone but also the many legends and folklore related to them. The
Greeks and Romans believed the stones to be of good luck. This stone was also
associated with mystical powers. Marbodius, Bishop of Rennes, an ecclesiastical
writer and hymnologist, in the year 1035 at Angers, France, declared the opal as
the patron stone of thieves; claiming it gave the wearer the power of
invisibility.
However it is Australia where the most fascinating and
wide spread stories are still told. The Australian miners whose country is a
major source for opals refer to the opal as the Rainbow Serpent, translated from
the mythological creature of the Aborigines. The name makes perfect sense, as
the Aborigines believed that this mythological creature left a rainbow colored
trail of Opals as it moved across the geography of Australia. The Rainbow
Serpent was a powerful and compassionate protector, it was closely associated to
land, water and fertility. Considered "the agent of destiny" for the Aborigines,
its trail of what we know as opals was a sign of protection provided by the
Rainbow Serpent.
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Opal Properties |
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Composition |
SiO2-nH2O |
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Refractive Index |
1.44-1.46 |
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Hardness: |
5 - 61/2 Mohs |
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Specific Gravity: |
1.9-2.23 |
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Typical Cutting Style: |
Cabochons, carvings, beads |
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Optic Character: |
SR, ADR common due to strain |
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Polish Luster: |
Vitreous to resinous |
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Cause of Color: |
Diffraction effects from tiny regularly stacked
silica spheres; green (body color) - nickel in clay impurities |
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Cleavage: |
None |
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Typical Size Range: |
Large pieces are available |
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Public Recognition: |
Well Known |
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Birefringence: |
None |
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Pleochroism: |
None |
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Fracture: |
Conchoidal to uneven |
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Reaction to Heat |
Abrupt temperature change may cause fractures,
crazing or cracks. heating can cause the loss of "play of color", also
turn their base color white or brownish |
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Stability to Light: |
Stable |
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Birthstone: |
October |
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Anniversary: |
Year 14th |
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Astrological Stone: |
None |
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Cleaning: |
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Ultrasonic |
Never |
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Steamer |
Never |
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Soapy Warm Water |
Safe |
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