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Geological surveys shed light on the formation mystery of Uruguay's amethyst geodes
Amethyst geodes in Uruguay have been found in cooled lava flows, which date from the original breakup of the supercontinent Gondwana around 134 million years ago. However, their formation has ...
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Rose quartz, raw minerals and amethyst geodes, oh my! What’s new at Sacramento Gem Faire
The Gem Faire returned to the Scottish Rite Masonic Center in Sacramento on Friday for its 35th year, bringing more than 75 of the country’s foremost jewelers, crystal dealers and beaders ...