Experts, please ID

[mope540]

Found this interesting rock while digging in the yard. The veins of quartz (??), some having a reddish tint, are very unusual to me. What is it??

Thanks for any info!!!

 

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[stdenis_jd]

Not a professional, but looks like a chalcedony nodule to me. Might have some agate banding...would be very interesting to cut open that's for sure!

 

[Eu_citzen]

I agree with the above.

 

[Mrdigz]

That's a nice one. How big is it?

 

[mope540]

Thanks for the help!!!!

That's a nice one. How big is it?

Approx. 3 1/4" wide...here's a scale pic.