Radical Rocks

Jaspers with Orbs How to Guide I don’t know anyone who doesn’t enjoy looking at the amazing orb jaspers, the patterns of orbs, with the shapes of oval, round, egg as found in the “porcelain jaspers” are rare and favorites of collectors. Yet there is mystery on how these orb type jaspers were formed. There is a wonderful book by Marco Campo-Venuti, Genesis and Classification of Agates and Jaspers; a New Theory (Tipografia Luciani, Rome,2012) That the author presents a in depth discussion of jaspers and the major types, classified into four groups: Ocean Jaspers, Volcanic Jaspers, Jaspers Paedomorphic on Fossils, and Chemicals Jaspers. Orb Brecciated and Jasper-Agates. History  The name Jasper means "spotted or speckled stone" coming from Hebrew and likely Greek definition and possible even Persian. In Israel the first stone on the High Priest's breastplate, was a red jasper, whilst  Tarshish , the tenth stone, this dates to 1300 BCE. We know that Jasper occur in...