Tourmaline on Quartz Bookend, Brazil Snacks Start by learning more about

Start by learning more about some of your favorite dinosaurs―from Velociraptor to Tyrannosaurus rex―and where you can see the coolest dinosaur skeletons

Due to the size and weight of this item

” a basic introduction to the subject

Agate forms in the nodule cavities of volcanic rock when silica-rich fluids seep through the volcanic material

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Tourmaline on Quartz Bookend, Brazil Snacks Start by learning more aboutSchorl, also known as "black tourmaline" or "black schorl", is a black form of tourmaline that often occurs as lustrous prismatic crystals. The crystals can be stubby or elongated and typically feature lengthwise striations. Many schorl crystals have flattened pyramidal terminations. They can also form in radiating, columnar, and stalactitic aggregations, as well as small, needle like inclusions within quartz (tourmalinated quartz) and in massive form.