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Dwarves' Earth Treasures Museum: How to ID Agate Roughs
Janos Thundereggs

 

-Typical colors: Colorless, red, yellow, pink, orange, brown
-Typical sizes: Any sizes
-Typical shapes: Almost always in broken clunks (miners break down large thunderggs to obtain thin agate)
-Most distinguishing characteristic: Fish or crescent shaped agate-filled cavity in reddish matrix.
-Special Notes: