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The really worth will depend on several key factors, for each and every contributing to the entire market value. Opals that are better-slashed and symmetric, which have a shiny surface you to definitely maximizes the new stone’s enjoy from colour, can also be demand large cost. Opal try a great gem written generally from silica and drinking water, noted for their striking iridescence and color enjoy. White or light opal is the most popular opal color, making it a more affordable choice.