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Black stone (conchoidal Fracture)SG is 3.12 and red stone SG is 3.51 both are harder than quartz

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asked Jan 25 by Pride (900 points)
edited Jan 25 by Pride

2 Answers

0 votes
You did not place a reference like a ruler allowing us to guage the size of the stones. They look to be gems.


Here is a specific gravity chart for gems. Red one is in diamond range.
answered Jan 25 by Weasel (55,650 points)
Now you can see the stones with a ruler. More suggestions please. The red stone got lot of traingular pits and also rhombus type of pits too.
0 votes
It looks more like garnet to me but the SG isn't close. You can PM me. I would like to know in what part of the world you are finding all these gems.
answered Jan 26 by Weasel (55,650 points)
I have PM you.
What could be the black stone?

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