jayb
off to a rocking start
Member since August 2017
Posts: 12
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Post by jayb on Aug 25, 2017 20:40:37 GMT -5
Another from my parent's old rock collection. Is this aquamarine? If not, what might it be?
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Post by vegasjames on Aug 25, 2017 20:49:11 GMT -5
Do a hardness test for starters to help narrow it down.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 25, 2017 20:49:49 GMT -5
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 25, 2017 20:52:33 GMT -5
What "could" it be?
Certainly aquamarine is a candidate.
So is fluorite. Therefore, vegasjames advise to scratch can rule out fluorite.
Also, the color doesn't seem correct but could be the camera or my phone, so prasiolite is a remote option.
Piece is big enough for a specific gravity too. There is a recent thread for that.
Anybody? What else might it be pending diagnostics?
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Post by vegasjames on Aug 25, 2017 20:56:12 GMT -5
Does not look like green calcite so I doubt that. Hiddenite, a spoudamene, is a possibility.
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QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,640
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Post by QuailRiver on Aug 25, 2017 23:29:21 GMT -5
Impossible to say for sure from viewing photos but nothing I am seeing here screams aquamarine to me.
Larry C.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Aug 26, 2017 0:04:52 GMT -5
Does n ot look lie green calcite so I doubt that. Hiddenite, a spoudamene, is a possibility. Good call. Hiddenite looks promising. Hardness test will help. He|| it could be simple glass. We need some diagnostics. Giving OP time to see this and react. Patience is a virtue!
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Post by 1dave on Aug 26, 2017 1:52:53 GMT -5
Most aqua I've seen is lighter than this-
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jayb
off to a rocking start
Member since August 2017
Posts: 12
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Post by jayb on Aug 26, 2017 8:14:25 GMT -5
Thanks everyone. I am not a rock collector so I'll have to do some research to see how to do those things. If I get to it I'll post results here.
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gemfeller
Cave Dweller
Member since June 2011
Posts: 4,050
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Post by gemfeller on Aug 26, 2017 20:08:56 GMT -5
I agree with the comments above. Trying to ID gems/minerals from photographs without physical/optical tests is pointless in most cases. A hand lens could probably find bubbles if it's glass and a hardness test would help narrow things down. But a 30-second refractive index test would probably yield an ID or provide strong clues to what it might be. Gemologists usually go to the microscope first, the refractometer second and other incidental tests (polariscope, S.G., dichroscope, spectroscope etc.) as indicated. Hardness testing is usually only appropriate on rough stones.
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