. 
Dwarves' Earth Treasures Museum: How to ID Agate Roughs
CrazyLace Agates
.
-Typical colors: White, gray, yellow, red, orange, tan.
-Typical sizes: Any sizes
-Typical shapes: Almost always in broken clunks, some are in form of "bubbly nodules"
-Most distinguishing characteristic: Twisting & zip-zagging agate bandings, hence, "Crazy Lace".
-Special Notes: Crazy Agates are commonly pseudomorphs (agate replacing pointy calcite crystals).