My guess would be turquoise and coral as that seems to be a common combination of stones used in this particular style of jewelry. I was told by a Zuni friend that the coral represents feminine and the turquoise represents the masculine.
I would love to have the Turquoise and coral ring because it looks just like a wedding band that my late husband and I use to have that matched. My sister didn't like my husband and ended up throwing mine out the car window going down the road and I was never able to find it. Would love to win this to replace it.