The deposit for this agates is the Timan-Mountain-Ridge in Northwestern-Siberia.
These agates are showing a very fine linend pattern. Very often a “shadow-effect” can be seen. One more chracteristic is the vividly deformed pattern.pattern. Some agates from this “Far North-Location” are showing a spherulitic pattern.
Jeffrey Anderson is showing on his homepage dwarve´s earth-treasures some agates from this locality.