Swap au yap fest coming up. . . So when I was thinking of Ratio's cornerstone, I know that Lapis Lazuli would have been a better fit, but it was too blue for my liking to go with Ratio. (I hope you all know that I did not chose the stones based on meaning, I went solely on the way they look.)

I chose Ametrine for him, mainly based on his eyes.

In my swap au, Ratio usually goes by the alias "Ametrine" but since in my au he's an ex-doctor/teacher many already know his true identity. He chooses to push the name "Veritas Ratio" and everything associated with it away. (Until a Dr. Kakavasha comes into the picture.)

Anyways sorry for my yap fest...