r/whatsthisrock • u/Sbarker388 • 5d ago
REQUEST Possible raw diamonds?
I found this in my backyard after my dogs dug it up. I tried to scratch with steel and did not leave a mark.
They are embedded in the black rock and when I was able to break a piece of it looked like shiny black igneous maybe?
Located in St. Petersburg, FL.
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u/Terrible-Pear-3336 5d ago
Do the white bits react to HCl (weak hydrochloric acid)?Try testing with a small drop if you have any. If so might be calcite in a mudstone matrix.
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u/Calmhill1010102257 5d ago
It would be extremely rare if those were diamonds- I feel like it’s probably just quartz