Help Identifying Stamp On 2 Vintage Pieces

[Suchafind]

Can anyone help me identify the maker of either of these pieces

The first is a bracelet. I am not sure what kind of stone it is. The artists mark appears to be an @ sign or something similar
[img][IMG]http://i781.photobucket.com/albums/yy100/sarah_preston2/DSCN7138_zpsum6lm8h1.jpg[/img][/img]


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