I tell ya, the creator of Yugioh was amazingly far-sighted. Or damn lucky.
Yami has amethyst eyes, and while I was looking up amethyst to buy, I saw that the chakras it targets is... guess what... the third eye.
Damn son.
Get this.
Chevron amethyst is believed to be the strongest Third Eye stone, one that opens the third eye and the gateway to psychic and spiritual development.
Fuck me sideways.
Yami. You genius!