Noble opal

ETYMOLOGY: OPAL = from de sanskrit"upala" = stone changes the color. 



CLASS MINERAL:  Silicates.


HARDNESS: 5.5 - 6.5 on the Mohs scale.

FIELDS: Australia, Mexico, Peru, South America, Honduras, Britain, Slovakia, Canada, USA.


MINERALOGY: In the group Opal distinguish between nobles opalescent opals, opals red yellow fire and common opals. The properties vary considerably. The opal is secondarily formed as a result of solidification of silicic acid gel by dehydration. Since silicic acid gel forms droplets silicon dioxides microspheres are formed. (20% water and gas). The opal color play is due to the phenomenon of light refraction in the microspheres of cristobalite.

MYTHOLOGY: In greek mythology it was said to come from the tears of the fate of Zeus after the victory over the Titans. In India is the goddess of the rainbow solidified in stone when he fled from the gods angry. Opal cristobalite has small areas included in a mass of hydrated silica gel, when these small areas are of equal size and an ordered three-dimensional distribution of the optical effect opalescence occurs, however when the small spheres are of different sizes and they are arranged irregularly opalescent effects not present.

PROPERTIES: It is said that the noble opal provides euphoria, brings joy, enthusiasm and a deep sense of happiness, inspires imagination to art and poetry makes you resourceful and creative, it makes us outgoing and helps infect others with one's own happiness, helps resist adverse events with humor, makes it possible to enjoy the good parts of life, improves sensitivity and eroticism.



USES: Jewellery, meditation, collection.

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