Genesis and Classification of Agates and Jaspers: A New Theory by Marco Campos-Venuti, Printed by Tophgrafia Luciani, Rome, Italy. Order from www.agatesandjaspers.com. 160 pages; 2012; $45 plus shipping (softbound).

Richard D. Dayvault

Genesis and Classification of Agates and Jaspers: A New Theory by Marco Campos-Venuti, Printed by Tophgrafia Luciani, Rome, Italy. Order from www.agatesandjaspers.com. 160 pages; 2012; $45 plus shipping (softbound).

2014

Richard D. Dayvault

Several decades ago most jasper and agate specimens were relegated to a back corner of the showcase—indeed their mineral pedigree was even doubted by many. Well, their microcrystalline makeup is qu...

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