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What is it and where is it formed? Opal is a gemstone and the birthstone for October. Opals can form anywhere but are mostly found in places where there hot springs. It is sedimentary ... What is it used for? Opals are used in jewelry even though the stones crack easily. They are also used for collections of gemstones.
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library.thinkquest.org/05aug/00461/opal.htm
library.thinkquest.org/05aug/00461/opal.htm
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Opal information, Opal jewelry, Opal gems. ... Black opal, precious opal with black body color. Also used for black potch covered with thin layer of crystal opal that lets the black under layer show through.
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www.gemsociety.org/info/gems/Opal.htm
www.gemsociety.org/info/gems/Opal.htm
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What is fire opal used for? What do they used opal for? What is the purpose of opal? What does an Opal look like? What are some uses for opal? What has opal been used for? Facts about opal birthstone? How much weight were a opal?
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wiki.answers.com/Q/What_are_the_uses_of_opal
wiki.answers.com/Q/What_are_the_uses_of_opal
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Information on the mineral opal ... There are many Opal varieties, each with its own name. Some are not scientifically recognized, but are universally used. The most important names are listed below; a much larger list can be found in the Opal variety page.
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www.minerals.net/mineral/silicate/tecto/quartz/opal.htm
www.minerals.net/mineral/silicate/tecto/quartz/opal.htm
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Opals are mostly found in Australia but also in parts of Europe, North America, South America and Africa. This gemstone has been mined since the times of the Roman Empire and is used in jewelry... Tags: gemstones opals cabochons
http://www.ehow.com/tag/cabochons/
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Opal could be considered the most colorful of gems. The wide range of color displays is unsurpassed. The best quality opals ... Sometimes opal doublets are used in jewelry. These are thin slices of precious opal, which are glued onto a matrix material. These forms of opals are much less expensive but still very beautiful.
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www.cwfashionjewelry.com/opal_gemstone_history/
www.cwfashionjewelry.com/opal_gemstone_history/
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Opal is a noncrystalline form of the mineral silica which, despite its amorphous structure, displays an amazing degree ... Opal jewelry is used to see possibilities in ones life. ... The white opal, when used in rituals on the full moon night, is said to bring the moon goddesses' powers to full fruition in the practitioner.
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www.jewelrymall.com/stones/opal.html
www.jewelrymall.com/stones/opal.html
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"Common opal" is rarely transparent, but may be colored or contain inclusions. It is used as backing for the more desirable varieties of precious opal, but may also be cabbed to produce interesting stones. It comes in white, gray, yellow, blue, green, pink, and may be dendritic or contain moss.
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www.theimage.com/gemstone/opal/opal.html
www.theimage.com/gemstone/opal/opal.html
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Opal Used Furniture for Sale, Buy, Sell @ Adpost.com Classifieds | Bookmark us Now! ... Want to reach out to all our members? ... Navigate: Opal Used Furniture for Sale, Buy, Sell...
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www.adpost.com/us/south_dakota/opal/furniture/
www.adpost.com/us/south_dakota/opal/furniture/
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