Please help identify makers mark on 14k turquoise ring

[music-surf]

I am hoping that someone with more knowledge than I can help me identify the mark on this 14k gold ring with a large turquoise surrounded by pearls. I tend to think it is a high end ring, but I honestly have no idea. The mark appears to be a 7 above a 3 with branches (olive?) on either side. Any help would be greatly appreciated. Thank you.

http://s19.postimage.org/ib2hku75f/hall ... q_ring.jpg

http://s19.postimage.org/m8pra8tyr/turq_ring.jpg

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