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Does anybody know what kind of crystal this could be?

My husband does pole inspection work and his job is to dig around and treat power and telephone poles. He found this while he was working near a highway. It doesn’t fog up, it scratches glass and is reflective. If you hold it in the light in the right position, you can see a tiny spot on it that gives rainbow colors. I took it to a jeweler and all she did was hold it in her hand and looked at it and just said it was a crystal but she didnt tell me what kind. She didn’t do any tests on it. What do you think it is?

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Answer #1

It is probably quartz: crystalline Silicon Dioxide ( Si O₂).

Answer #2

I know nothing …But for some reason I think it looks like glass,old glass…but what the elll do i know,i aint got a clue.

Answer #3

I’ve been looking at videos and pics of raw diamonds and I can’t help but keep thinking it could be one because when i compared this to raw diamonds, there are so many similarities that’s too hard to ignore. But I do plan on finding someone who has a diamond tester to check it. :)

Answer #4

Looks like glass to me to be honest.

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