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The Sanskrit Word upalaḥ he came to Greek as opállios, which derived in Latin opălus. In our language the concept became opal : that's what a siliceous ore which can be found in different shades.

The opal has a structure similar to that of the quartz , although it has Water inside. Although it is hard, it is also brittle.

There are different types of opals, which can be opaque or translucent. Thanks to the microscopic particles that make them up, they have the ability to reflect the light rays and turn them into the tones of rainbow .

He noble opal , for example, is almost transparent. He sunflower opal , meanwhile, it is yellowish, while the fire opal It stands out for its bright red. The different varieties of opal can be found in countries as Australia , Mexico , U.S , Honduras , Venezuela , Brazil , Peru , Tanzania and Ethiopia .

The extraction is made of sedimentary rocks by manual work. The majority of the opal is obtained from Australian deposits.

It should be noted that the most common use of opal appears in the field of jewelry . The play of colors that is produced from the reflection of the light and that varies according to the angle of observation is its most appreciated feature.

This particularity is called opalescence . As the light passes through the various layers of the stone , there is an effect that surprises observers. Thanks to this quality, many jewels are made using opals.

To preserve the characteristics of the opal, it is important that you do not lose Water . That is why it is necessary to protect the gem from very dry environments, excessive heat and abrupt temperature changes.

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