I need help with ID on this ring.

[The Bulgarian]

i every one.Today I found this ring in the water and I am little confuse.It is no gold,but have 4 marks in side.
Please if anybody know what that mean let me know.Thank you.
<img src="http://farm2.static.flickr.com/1058/539337034_9c4268fd5c.jpg" width="500" height="375" alt="Picture Olympus 004" /> <img src="http://farm2.static.flickr.com/1076/539342888_1147dda6fc.jpg" width="500" height="375" alt="Picture Olympus 006" />
<img src="http://farm2.static.flickr.com/1013/539463099_6e2bb9727c.jpg" width="500" height="375" alt="Picture Olympus 0017 copy" /> <img src="http://farm2.static.flickr.com/1040/539463267_c6f881a5a2.jpg" width="500" height="375" alt="Picture Olympus 008 copy" />
<img src="http://farm2.static.flickr.com/1375/539348734_1f3409ac0b.jpg" width="292" height="292" alt="Picture Olympus 00017 copy" /> <img src="http://farm2.static.flickr.com/1132/539348408_cbe140e85e_o.jpg" width="144" height="151" alt="Picture Olympus 007 copy" />
<img src="http://farm2.static.flickr.com/1258/539463031_980b72e986_o.jpg" width="118" height="131" alt="Picture Olympus 00007" /> <img src="http://farm2.static.flickr.com/1313/539348670_093030dd2d_o.jpg" width="128" height="180" alt="Picture Olympus 000007" />
<img src="http://farm2.static.flickr.com/1165/539462995_e68e842514_o.jpg" width="632" height="216" alt="Picture Olympus 0007" />

 

[bdahunter]

n/t

 

[The Bulgarian]

n/t

 

[bdahunter]

n/t

 

[PaPa-Joe-Fla.]

n/t

 

[The Bulgarian]

n/t

 

[gold-digger]

Here you go Nicoli.

http://www.925-1000.com/

 

[Gulf Hunter]

n/t