Lovely Silver Ring Modernist? Unusual Mark

[Tammietired]

Hi all! This is a neat 925 silver ring with a mark that I just can't find anywhere! It seems like I've seen it before, but I have no idea where. I believe it's American-maybe modernist? Not sure..and it has a beautiful whitish colored stone. I am not very familiar with stones and can't tell what it is..any help is very appreciated!

http://tinypic.com/m/ayoh37/2
http://tinypic.com/m/ayoha0/2
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[ValkyrieVixen]

I've seen that mark a few times before but never been able to ID it, frustrating.
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[Tammietired]

darn it! hopefully someone will recognize it!
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[ValkyrieVixen]

It's been posted on this forum before with no ID so not likely but maybe the right person will come along. :)
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