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Opal

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Opal name
was probably derived from Sanskrit “upala“, meaning ”valuable stone“. This
was probably the root for the Greek term “opallios”, which translates as
“colour change”. In the days of Roman antiquity there existed a so-called “opalus”,
or a “stone from several elements”. Opal is a herdened silica
gel containing 5 - 10 percent water. It can though dry away and crack. Opals are not very hard: they only achieve 5.5 to 6 on the Mohs’
scale. Therefore they appreciate a protective setting. In earlier days
Opal’s sensitive surface was often oiled, but today also sealing them with colourless artificial resin has become quite popular.Numerous legends and
tales surround this colourful gemstone, which can be traced back in its
origins to a time long before our memory, to the ancient dream time of the
Australian aborigines. It is reported in their legends that the creator came
down to Earth on a rainbow, in order to bring the message of peace to all
the humans. And at the very spot, where his foot touched the ground, the
stones became alive and started sparkling in all the colours of the rainbow.
That was the birth of the Opals. For ages people have been
believing in the healing power of Opal. It is reported to be
able to solve depressions and to help its wearer find the true
and real love.
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There are two varieties of opal
- precious opal, which shows flashes of colors depending upon
the angle of viewing and "Potch opal" which is opaque and
flashes no colors. Opal fills cavities in sedimentary and
igneous rocks. Australia has been the main producer of opal
since 19th century. Other sources of opal are USA, Brazil,
Mexico, and southern Africa. There are two varieties of opal -
precious opal, which shows flashes of colors depending upon the
angle of viewing and "Potch opal" which is opaque and flashes no
colors. Opal fills cavities in sedimentary and igneous rocks.
Australia has been the main producer of opal since 19th century.
Other sources of opal are USA, Brazil, Mexico, and southern
Africa.
Natural Gemstones |
Myths on
Opal >> |
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