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The book features hundreds of photographs of unique specimens drawn from Secher’s private collection
colorful observations and inside stories from one of the world’s most prolific collectors
Our planet is in peril and needs your help
crying out not for further reduction and definition
7" Bottom diameter
Agate and Amethyst Slice on Stand Magnets The book features hundreds ofAgate is a form of quartz known for its circular banding. It forms in layers over millions of years as groundwater with mineral impurities drip into empty spaces in volcanic and metamorphic rock. The different colors in the layers are due to different concentrations of minerals that form that layer. If you look at geodes, youll notice that the base or outside of the geode is composed of agate.
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