CON107FF Condor Agate Specimen From Australia revealing open inner cavities showing

revealing open inner cavities showing botryoidal formations of chalcedony and crystal druzy inside

paleontologist Sue Hendrickson

The chemical formula for Black Tourmaline is NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

This polished Coyamito Agate specimen features a distinct flow channel and a small quartz center surrounded by banded agate in shades of pink

CON107FF Condor Agate Specimen From Australia revealing open inner cavities showingThis polished Condor Agate shows a crystalline center surrounded by blue gray banded agate with black chromatography, and then translucent agate with dark orange to red, and hints of purple. The back of the nodule is intact with just a few tiny windows. 9. 4cm x 8. 3cm polished face approx. 2" deep 1lb 0. 1oz