I have gotten more than a few pieces of this interesting rough from Nigeria over the years. It is really a pink crystal that has some faces that look they had a chomophore (trace element that effects color) diffused into some of it crystal faces. the pink and green happen to have the right relationship to mix into oranges and yellows. If there is too much to blend of one color with the other color, it remains visible in the gemstone.
With the posted standard round brilliant, you can see some residual green in the yellow around the girdle and pink as you tilt the stone. But the overall impression you get of this eye clean and bright gemstone is some shade of beige. This mixing certainly varies with the light. It weighs 4.40 fun carats.