June 22-25: Sainte-Marie-aux-Mines:International Mineral & Gem Show
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 Post subject: Re: A dead-simple "new" specific gravity technique
PostPosted: Sun Jan 29, 2017 11:45 pm 
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Joined: Mon Feb 11, 2008 11:11 pm
Posts: 503
Location: Moncton, Canada
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Amethyst&ruby-GO-7497 copy 2.jpg
Amethyst&ruby-GO-7497 copy 2.jpg [ 226.56 KiB | Viewed 193 times ]


The two stones tested in the smaller pot - an 0.60 gram amethyst and an o.74 gram synthetic ruby.


Attachment:
ruby-in-sm-pot-GO-7493 copy 2.jpg
ruby-in-sm-pot-GO-7493 copy 2.jpg [ 244.28 KiB | Viewed 193 times ]


And here's the ruby, on the scale, submerged in water in the new, smaller, pot.



Averaging three separate weighings for the amethyst yielded a specific gravity of 2.60, not as close as the crystal samples, but a little bit closer than the 2.73 I had obtained for that same stone in the facebook story. The ruby (only a single test on that one), gave a SG of 4.11 compared to the Schumann values of 3.97 - 4.05. In the upshot, the smaller container did not seem to make enough of a difference to be worth the effort, although I may experiment further along those lines.


Cheers all,
Hans Durstling
Moncton, Canada

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