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petrified wood can display an enormous variety of colors
A silicone-based mineral closely related to quartz and agate
Pyrite formations tend to be shiny and metallic
and because of this they are one of the most frequently found vertebrate fossils on earth
Malachite has been mined for both use in copper tools and for ornamentation and jewelry
Blue Aragonite Agate petrified wood can display anAragonite is an incredibly variable mineral, and the second most common form of Calcium Carbonate on Earth. Pure Aragonite is typically colorless or white, but chemical impurities can turn it into a range of spectacular colors. These specimens are a beautiful sky blue with fine crystalline surface in unique whorls or spherical shapes throughout.
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