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Minerals & Rocks



Gems & Minerals

Opal Rhyolite

Item Description:

     Rhyolite is an extrusive igneous rock with a very high silica content. It is usually pink or gray in color with grains so small that they are difficult to observe without a hand lens. Rhyolite is made up of quartz, plagioclase, and sanidine, with minor amounts of hornblende and biotite.


     The opal in our opal rhyolite, mined in California, forms when pockets of gas are still trapped inside of the lava. As the lava quickly cools, the trapped gas is unable to escape and forms cavities known as "vugs." Later, when the lava flow has cooled and hydro-thermal gases or ground water move through, material can precipitate in the vugs. This is how some of the world's best deposits of red beryl, topaz, agate, jasper, and opal are formed.


     Metaphysically, opal is a stone of inspiration which enhances imagination and creativity. It can bring inspiration to projects and to life and Spirit. Its own spirit is at times like that of a child spontaneously playing, dashing color where ever it pleases. Carrying this imaginative spontaneity into the realm of you life can bring strong creativity.



Item Details:



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     Each of our specimens are unique, and will vary from the pictures shown. Pictures shown are merely an example from our stock of what you will receive upon purchase.

-(.03 to .05 Kg)






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