Golden Agate slice on brass base
PUMI1970-4
Agates are part of the silicate minerals, and their origin start deep inside the earth: basaltic lava flows, full of gaz, heading toward the surface are sometimes solidified on their way. The gaz pockets that remain trapped will be filled by each hydrothermal fluid circulation. Each oxyd or mineral contained in such fluids -mainly silicate gel- will add some colors to the previous deposit: hematite (the most important in thiece piece) , limonite, manganese or green chlorite... When light comes through it, like in picture 5, it turns almost like a flame.
This unique piece has been sold...
