This Black Velvet was bought with 2 leaves. One of them was imperfect so I trimmed it. It seemed fine for a while but I just noticed a quick progression of yellowing as shown in the update photo. I’ve cut the leaf off and thrown it away. Where it’s not just yellowing, but also has some dry graying on the end, I’m hoping that it’s unique enough to help you all identify exactly what the problem was. The other leaf is in perfect condition and there is another leaf starting to pop out. The yellow leaf is the oldest leaf if that helps. Thank you for any feedback you might have.