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Identity HelpOnyx - Agate - Argentina

7th Apr 2011 16:43 UTCMauricio Zottis

Hi! Some months ago i got this rough preaty blue material from argentina and they call it blue onyx. This last week i decided to cut it to see what i would get and i got some realy preaty gemstones.

Now im not sure how to call it since it have bands and calcedony with bands are called agate



This photo looks allot like my rough material

http://www.mindat.org/photo-27090.html



Someone can help plz! ?

7th Apr 2011 19:27 UTCDonald Slater

The name Onyx was originally and still is to some extent applied to banded agate. Now most people associate the banded travertine which is Calcium carbonate and comes from Mexico and other places as onyx. I think your material might be called onyx by some but I would call it agate. I am guessing it is has a good hardness like agate?

9th Apr 2011 12:56 UTCRock Currier Expert

I would also suspect that it may be died agate and not a natural color, but I could be wrong.

10th Apr 2011 00:02 UTCJorge Dascal

The stone in your two photos is what we locally call Blue Marble Onyx. Is natural and there are few quantities of that high end color.

1st Jun 2016 19:30 UTCsequoia

hello Jorge

would you by any chance know a supplier for

the blue onyx rocks.

thanks for your help,

sequoia

USA

2nd Jun 2016 23:02 UTCJorge Dascal

Hello Sequoia,


The Argentina Dealer I know only export over 10 tons of the top quality.

Cordially

Jorge

13th Dec 2016 06:01 UTCSequoia Madan

Yes I can buy 20 tons at a time. Rocks about one meter long.
 
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