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Dwarves' Earth Treasures Museum: How to ID Agate Roughs
  Tavenier (Baker Ranch) Thundereggs
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-Typical colors: Black, white, gray, red (look washed down).
-Typical sizes: 3 to 15 centimeters
-Typical shapes: Thunderegg-like (bubbly), some are heavily weathered.
-Most distinguishing characteristic: Small gray thundereggs with bits of brown balls on the surface. Colors of the agate are more washed out than Baker Eggs. Agate waterlines are far common in Tavenier eggs than Baker Eggs.
-Special Notes: TThey're 1/4 mile apart, but Tavenier eggs share the same strata as  Baker Eggs. The main difference is that the agates of Tavenier eggs were deposited in wetter enviroments, hence, more waterlines, transparent agates, and washed down colors.