Sterling rings with stones blue and orange marked SC and MD

[jcm]

Trying to figure these out. Not sure but originally thought to be native American but not sure now.
Any help with the marks or the type of stones especially the orange one as I think the blue to be turquoise.
Thanks everyone
one is marked MD (the blue stone one)
and the other is marked with a shape and the letters SC inside(the orange stone one)

http://i196.photobucket.com/albums/aa14 ... CT0262.jpg


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[2209patrick]

Hello.

The SC mark is used by Silver Cloud Inc., Albuquerque, New Mexico.
Founded sometime in the 1970's.

Only one item and mark per thread is permitted on this forum.
Posting Requirements

Pat.
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[jcm]

Thanks and sorry about that 2 post thing.Forgot. Any idea of the stone in this setting?
thanks
and you know I was thinking I had seen that in my books somewhere about silver cloud,but could not find it again. I really remembered it by the shape
thanks
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[2209patrick]

You are welcome.

My first thought was Coral.
However, I know very little about stones. Better get an expert opinion.

Pat.
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