The dark colored agates from Argentina were apparently collected and brought to the United States by Luis De Los Santos in 1990s. He named them after the large birds flying above the collecting site 6,000 feet high in the Andes Mountains of Argentina after tracking down the path of the German collector who first found the Condor Agates decades ago. The access to the site proved to be so difficult that it be accessed by using mules, hence about a ton to three can be brought back each trip depending on weather, luck and availability of helpers.
  The name "Condor agate" applies to any agates mined from at least 12 mining claims along the andesite/basalt outcrops and there are some vein forms that are typically red to yellow colored, sometimes orange and black.
   The colors of the Condor Agates are generally dark and earthy colors (brown, yellow, black, orange, and red) and few have been found with brighter colors. Those with bright colors or strong banding usually commend the premium prices. Some recent mine claims produced some excellent and more colorful banded agates with calcite skins.

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Rough Appearance: Highly pitted & irregular shaped nodules, sometimes showing color through skin.
Agates are generally dark colored (mostly brown to orange) and bright colors are quite rare.
Some have rotting greenish-brown basalt matrix still attached to them.