Re: Re: Re: Anyone kind enough to evaluate this rough gem
Hi again Edward,
The material you have showed in your pictures is massive and appears to be very heavily fractured and included. Not faceting quality emerald, which can sell for several thousands of dollars per carat for top material. It also doesn't have significant monetary value as a mineral specimen as it is massive and not in crystalline form.
It is possible to tumble stones this size, doing so is mostly a matter of the scale of the tumbler. People do tumble fist size and larger pieces - I've seen home brewed tumblers made using drag car slicks, tractor tires and such that could handle pretty good size rocks, and the Colorado River does a respectable job on an even bigger scale. :)
I hate to disappoint you but my evaluation is your stone doesn't have much monetary value. As already noted it isn't faceting quality rough, but it might have some lapidary potential for cutting into cabochons, beads and so forth. It also might just fall apart during lapidary processes depending on how extensive the fracturing is...
If there is a gem and mineral club anywhere near you, consider taking it to a meeting and showing it to a club instructor or experienced lapidary there. They will be glad to advise you further based on a first hand inspection, and may even be able to provide facilities for you work on and polish this and other stones yourself.
Keep on Rock'n!
From Bob Keller - December 11, 2007 at 11:39:30