Brazilian Agate Coaster


SKU: MN-AG0004

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Brazilian Agate Coaster

The Science:

Agate is a type of chalcedony - a cryptocrystalline variety of silica. Often associated with volcanic activity, it is also found in metamorphic and fossiliferous rock. Agate forms in rock cavities - whether created by bubbles or volatile material in volcanic lava or the decomposition of an item such as a seashell - which fill with molecules of silica over time. Variations in the mineral content result in an array of colors and sometimes create striking banded patterns. Agate was named for the Achates river (in what is now Italy) by a Greek philosopher named Theophrastus in approximately 350BC. Historically used for carvings, including cameos, beads and cabochons, Agate was in commercial use as early as 3,000 years ago.

The Story:

This Brazilian Agate Coaster is fashioned from the highest quality stone and the edges have been left unfinished for a natural look. An Evolution Store favorite, it comes in a variety of vibrant colors, and because it is natural agate, each piece looks completely unique! These coasters are sold individually, but they are also available in a set of six.

Individual shapes and colors vary but your item will resemble the pictured examples.

SKU: MN-AG0004
Dimensions: ~4"W x ~3.5"L x 0.19"H
Composition: Chalcedony
Origin: Brazil
Shipping Restrictions: None.
South America

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  • 5

    Posted by Tiffany Luis on Dec 15th 2016

    This is my second purchase from the Evolution store and they never disappoint! Items are always delivered quickly, even without the most expensive shipping. They are packaged wonderfully, and the items are always top notch. My husband, who is very picky, is obsessed with everything from this place. I hope to visit it in person one day!

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