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Found on a Long Island Sound beach -- what are they?

+1 vote

Hi! Can anyone tell me what these two are? I thought they might be rutilated quartz, but they have white string-like incursions, not the gold ones that pictures of rutilated quartz seems to have. Any suggestions welcome.
Thanks in advance,

asked Nov 8 by wddt (130 points)

2 Answers

0 votes
They are very well polished. If this is quartz you will not be able to scratch it with a common nail or pocket watch. I will do further research..
answered Nov 11 by Weasel (55,690 points)
0 votes
To me, they look like agates or chalcedony. Very interesting find!
answered Nov 13 by linkisnotzelda (4,960 points)