This is my first post in this forum, so please bear with me. I was a contractor for 20 and I did some work for an older gentleman. He had traveled all over the world and always brought back rocks. I found one very interesting and he gave it to me. It was almost white and was a fairly soft material that kept falling a apart. I took it home and set it in a flower bed. Well a few years later I noticed something green in the middle when the white substance had weathered away. I just thought it to be a chunk of glass. But what was the white material? It had a consistency of thick toothpaste or something. The green glass was about a small baseball size. I cut it on my rock saw and found a lot of air bubbles in it. Well I got to thinking that it maybe an emerald. Since it did come from South or Central America. I watched the show about the Bahia emerald and it got me thinking about my green glass. Several years ago I had a vibrating polisher with carpet and I guess tin oxide in it. I had placed this green glass in that and all I came up with is tin oxide stuck to it, just like all the other rocks that I tried to polish. So I went out and found the green glass and tried to take off some of the tin oxide by using a grinder with 120 aluminum oxide grit on it. I got some of it off and then took pictures. It did polish some of the green glass this way. I wouldn't think it would do that if it was glass. So I ended up here and I also emailed a guy named Jeff, one place said "ask Jeff', so I did. Does anybody have any idea of what I have. The piece pictured weighs 75 grams. Thanks for any info. http://www.mindat.org/forum.php?read,11,251115,251115#msg-251115 Thu, 20 Jun 2013 10:17:54 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,11,251115,253541#msg-253541 http://www.mindat.org/forum.php?read,11,251115,253541#msg-253541 Craig Mercer Identity Help Mon, 27 Feb 2012 02:44:52 +0000 http://www.mindat.org/forum.php?read,11,251115,253117#msg-253117 http://www.mindat.org/forum.php?read,11,251115,253117#msg-253117 I did all the 'finding'. :)]]> Diann Temple Identity Help Wed, 22 Feb 2012 19:47:31 +0000 http://www.mindat.org/forum.php?read,11,251115,251126#msg-251126 http://www.mindat.org/forum.php?read,11,251115,251126#msg-251126 Stanley Craig Identity Help Wed, 01 Feb 2012 01:21:29 +0000 http://www.mindat.org/forum.php?read,11,251115,251123#msg-251123 http://www.mindat.org/forum.php?read,11,251115,251123#msg-251123 And yes, your specimen is green glass....]]> Paul Brandes Identity Help Wed, 01 Feb 2012 00:53:32 +0000 http://www.mindat.org/forum.php?read,11,251115,251120#msg-251120 http://www.mindat.org/forum.php?read,11,251115,251120#msg-251120
Yes, it's a perfect example of how not to make African Moldavite ;-)

All jokes aside though, it's definitely glass.]]> Craig Mercer Identity Help Tue, 31 Jan 2012 23:31:44 +0000 http://www.mindat.org/forum.php?read,11,251115,251119#msg-251119 http://www.mindat.org/forum.php?read,11,251115,251119#msg-251119 seriously now, Stan, try to scratch it with a quartz. If you can, is glass.]]> Jose Zendrera Identity Help Tue, 31 Jan 2012 23:27:25 +0000 http://www.mindat.org/forum.php?read,11,251115,251118#msg-251118 http://www.mindat.org/forum.php?read,11,251115,251118#msg-251118 Steve Hardinger Identity Help Tue, 31 Jan 2012 23:19:58 +0000 http://www.mindat.org/forum.php?read,11,251115,251115#msg-251115 http://www.mindat.org/forum.php?read,11,251115,251115#msg-251115 I was a contractor for 20 and I did some work for an older gentleman. He had traveled all over the world and always brought back rocks. I found one very interesting and he gave it to me. It was almost white and was a fairly soft material that kept falling a apart. I took it home and set it in a flower bed. Well a few years later I noticed something green in the middle when the white substance had weathered away. I just thought it to be a chunk of glass. But what was the white material? It had a consistency of thick toothpaste or something.
The green glass was about a small baseball size. I cut it on my rock saw and found a lot of air bubbles in it. Well I got to thinking that it maybe an emerald. Since it did come from South or Central America. I watched the show about the Bahia emerald and it got me thinking about my green glass. Several years ago I had a vibrating polisher with carpet and I guess tin oxide in it. I had placed this green glass in that and all I came up with is tin oxide stuck to it, just like all the other rocks that I tried to polish. So I went out and found the green glass and tried to take off some of the tin oxide by using a grinder with 120 aluminum oxide grit on it. I got some of it off and then took pictures. It did polish some of the green glass this way. I wouldn't think it would do that if it was glass. So I ended up here and I also emailed a guy named Jeff, one place said "ask Jeff', so I did.
Does anybody have any idea of what I have. The piece pictured weighs 75 grams. Thanks for any info.]]> Stanley Craig Identity Help Tue, 31 Jan 2012 22:52:32 +0000