beach glass?

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    How on eareth do you tell the difference between real beach glass and
glass that someone polished in a rock tumbler???


Re: beach glass?
HI

No Body wrote:
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I wouldn't think you could tell just by looking - after all, it's the
same process - just that the rock tumbler does it rather faster...

Adrian

Re: beach glass?

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Sorry to answer a question with a question, but Why would it matter?  It
isn't like beach glass is some long sought after limited commodity.  It
isn't particularly rare or collectible in itself to have some forgery value,
so why does it matter?  whichever means gives the end result is what I would
think would be important, and how it is used even more so.

to answer your question, carbon dating could give you a precise age of the
material, but don't know that it is quite worth it.



Re: beach glass?

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lick it and see if it's salty?



Re: beach glass?
On Tue, 12 May 2009 18:23:06 -0400, Steve wrote:
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Only if it's really old and was originally part of a living thing.  And
even then, "precise" is a relative term.  Wikipedia seems to say that
for samples less than 10,000 years old, dating to within 40 years either
way is considered reasonable.  


Re: beach glass?
Steve wrote:
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Would carbon dating work?. I think that applies to living organisms that
have carbon in them at some level during life and it decreases due to
radioactive decay once dead so the age can be determined. I didn't think
glass normally contained any carbon containing chemicals.

Re: beach glass?
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If you do a search at Wikipedia for "sea glass" you will see a section
on artificial sea glass.  The article seems to indicate that there is
a way to tell artificial from the real.  And, it looks like the real
has more value for the collectors.

Might be fun for you to get involved with someone in the know and
learn how to tell the difference.  I may move back to Florida and
start collecting it.  I used to think it was worthless.

Henry

Re: beach glass?
wrote:

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If they tumbled it in actual beach sand I doubt theres any way to
tell. Why would anybody care? Just curious.

Jack


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