🔎 UNIDENTIFIED Help me identify this crystal

[Fodegrass]

It is non magnetic, hardness 7 or above.

 

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[Blackfoot58]

I’m struggling to see the structure.
I’m guessing it is micro-crystaline or crypto-crystaline. If so, a form of chalcedony?

 

[Fodegrass]

I’m struggling to see the structure.
I’m guessing it is micro-crystaline or crypto-crystaline. If so, a form of chalcedony?

More images ,the crystal is somewhere between transparent and translucent.

 

[Fodegrass]

I found it in a lake in madurai tamilnadu india