🔎 UNIDENTIFIED Half Egg Shaped Rock on Outer Layer of Many Rocks We Found (Calico)

[david.fox]

We found these on the outside layer of the rocks we found in Calico. They are like half eggs shaped, all of them. It’s almost like a growth on the rock. Not sure what they are. Any help?

 

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[Tpmetal]

looks like agate maybe?

 

[unclemac]

something along these lines.'

thunder egg rough - Google Search

 

[ToddsPoint]

I looks like chalcedony to me.