What is this??

[Kimberlyykaye]

This are two of several rocks or crystals (not sure what they are), that I found in a rusty can in a old garage. At first I thought they might be some kind of coral now I'm just not sure. One is white, and the other a brown. It's not dirty I thought it was but once I got them home I ran them under water and that seems to be it's natural color. They peeked my interest, and I can't seem to identify them. Anyone have an idea to what they could be?

BROWN:




WHITE:

 

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[waterfalljay]

Both are probably quartz.
The brown one has iron causing the discoloration.

 

[SD51]

Agree with waterfalljay! I found these in Wisconsin and they look similar...

 

[Kimberlyykaye]

Agree with waterfalljay! I found these in Wisconsin and they look similar...

View attachment 1473530

View attachment 1473531

Those do look similar, thank you both for the help. I had never seen quartz this way before, it left my mind at a blank. When I flipped them over my mind had me thinking coral for some reason lol.

 

[IAMZIM]

I would try a little vinegar on it, to see if it bubbles, if it does, it could be calcite crystals, if it does not, I agree with waterfalljay and SD51.

 

[Kimberlyykaye]

I would try a little vinegar on it, to see if it bubbles, if it does, it could be calcite crystals, if it does not, I agree with waterfalljay and SD51.

I'll do that, thanks for the suggestion. Does it matter what type of vinegar?

 

[IAMZIM]

I'll do that, thanks for the suggestion. Does it matter what type of vinegar?

Any kind should work!