Ok, it was hard to tell in your photo- yours is beautiful.Not rainbow, just a standard Orange Yuma Ricordea. Some people sell them as "Rainbow" because it adds $$$ to the selling price. I think Orange, Yellow, and Green are your standard colors but there are others available. To me Rainbow means multiple colors where the orange is on mine.
I did see real rainbow- in fact they were saying any coral that is true rainbow is $$$. Looking forward to posting some of the Uber colony size corals.
Btw, I got a Duncan and it reminded me of the one you submitted for photo of month! You will like it.