.  Dwarves' Earth Treasures Museum: How to ID Agate Roughs Brazilian Agates

-Typical colors: Gray, brown, yellow, white. Note that Brazilian Agates are commonly baked to produce orange colors, and some slices are dyed (pink, blue, purple, and other strong colors).
-Typical sizes: Any sizes, and large ones are commonly encountered.
-Typical shapes: Domed
-Most distinguishing characteristic: Large and dome shaped tan to brown nodules.
-Special Notes: Some contain stalactitic structures ("eyes") and waterlines.