Hi I have these for a while now...and I never found others rock like them anymore.. in a hole I dig for sometimes..I know it's not diamond they are too big and don't have the form of it...but what puzzle me is my diamond tester sound on each of them when I test them.. other quartz I have found the diamond tester don't even react more than 1 or 2 bar.. But the two small one the tester go up and beep like when I test the diamond on my wedding ring...my question is what or can clear quartz can make a diamond tester beep ? I can see thru with a flashlight...those rocks look like they have a skin around them ( if I can say that)..I am from Canada Quebec and they scratch glass and granite..marble.. pieces I have around.. thank you
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