"I'm not speaking of durability. I mean chemically stable, on the molecular level." Diya stops and has to backtrack for Lapis's need for lay terms. "Do Gems undergo any sort of metamorphosis? I don't mean your shapeshifting. That doesn't seem to involve any change to the gem itself. But these cells..." She points, demonstrating. "Keep trying to attach to one another. They form chains of proteins -- they make bonds to one another to twist together. But those bonds don't hold, and they break apart again. Either this is natural cell behavior, or it isn't. And if it isn't, we must consider the possibility of disease."