Runder Regenbogen-Mondstein-Cabochon

Edit: OttoFrei CS reached out to me and rectified the stone issue.

I ordered a 5mm and a 4mm Rainbow Moonstone. I was contacted by CS to let me know they were out of the 5mm and asked if I'd like to sub it for a 4mm. I said sure, not a problem, go ahead and sub it. I received the order today and the moonstones are completely different and look nothing alike. While I do expect variation in natural stones as expected, but these two moonstones are completely different. One is clear with a tiny shimmer and one is white with a tiny shimmer. Not what you expect for AAA moonstone.