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Post by lynskyn1970 on Aug 21, 2008 14:41:39 GMT -5
i'm not sure what the blue stone is. i'm pretty positive it is not sodalite. it doesn't polish up well with tin oxide or zam. in the sun it has lots of pretty sparkly specks in it like mica. could it be demorturite? is there such thing as blue aventurine? there is some white in it but alot of the white your seeing is from the polish stuck in it. the green stone is a mystery also. my hubby cut a piece of it and i was like wow!!! the green stone is not real hard maybe like a 6 or so. not as hard as agate. well if anyone has any ideas let me know any input will be appreciated!!!   this is the green stone in rough  this is cabbed up  |
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Post by gemlover on Aug 21, 2008 20:48:14 GMT -5
in geologic circles, the green rock is a breccia; no id on the components that are showing in the picture. but it does make a very nice cab.
how have you eliminated sodalite for the blue? the resemblance is uncanny. How hard is the blue? can it scratch quartz, knife blade, calcite? streak color?
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Post by kap on Aug 21, 2008 21:58:40 GMT -5
I have some blue aventurine and it does look a lot like it. It does not take a great polish. I can usualy get a good polish on sodalite. I LOVE the green!
Keith
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Post by lynskyn1970 on Aug 21, 2008 22:02:08 GMT -5
thanks guys. so there is blue aventurine. because this blue stone has lots of sparkles to it like the green aventurine does. i had a heck of a time getting a polish on this also. for hardness of the blue stone it is softer than agate. not a whole lot softer but it was pretty easy to work.
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Post by stonesthatrock on Aug 21, 2008 22:34:45 GMT -5
i wish i could help, the green is really cool
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Post by lynskyn1970 on Aug 21, 2008 22:43:41 GMT -5
no problem. no matter if i ever find out what everything is. i like it so thats all that counts to me. thanks everyone!!!!
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Post by stoneviews on Aug 22, 2008 10:46:03 GMT -5
cool looking stuff, great shapes on the cabs.
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Post by lynskyn1970 on Aug 22, 2008 18:13:30 GMT -5
thanks, i thought it was really cool looking. my hubby found it among the pile we have. my hubby did the cab, he's getting pretty good, giving me a run for my money!!!!!
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kurts
Senior Member
Posts: 82
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Post by kurts on Aug 22, 2008 23:59:43 GMT -5
That's a beautiful piece of breccia. I have seen green breccia here, but it usually contains serpentine, but yours appears to be harder and perhaps is quartz-based?
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Post by lynskyn1970 on Aug 23, 2008 9:36:19 GMT -5
i'm really not sure where the breccia came from, i got a big ol pile of rocks from an estate sale and my hubby found this in it. he said it wasn't quite as hard as agate maybe a tad softer. well i have yet to cab up some. i'm going to real soon here i have to let my hubby know who's the best when making cabs!!!!! lol!!!! i love it because it has lots of pretty greens in it. i look at it and just wonder whats in it. it has black and greens but also has some whitish specks in it also. pretty no matter what!!!!
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Post by hydrogeologist on Aug 24, 2008 9:50:09 GMT -5
I wouldn't rule out dumortierite as the cab material in the first picture. I found a messload of it in SoCal. I also talked to an old mineral collector who had tons of it on his ranch in AZ as well.
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Post by lynskyn1970 on Aug 24, 2008 9:53:51 GMT -5
that was my first thought on the blue stone also. it really is pretty stuff and it isn't real hard to work either. i just couldn't get a really good polish on it. thanks for the input everyone.
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Post by lynskyn1970 on Aug 24, 2008 12:33:45 GMT -5
have to try that. didn't know that about sodalite. thanks for the info.
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Post by gemlover on Aug 24, 2008 18:48:26 GMT -5
Might separate several possibilities by hardness:
Benitoite (very rare, one source in California) 6 to 6.5
Azurite 3.5 to 4
Chalcedony 7
Linarite 2.5
Sodalite 5.5 to 6
of course there are other blue minerals / rocks.
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