Pulled deli ham from the fridge and noticed a rainbow-like shine on the slices. Is that normal?

and fat, along with the angle of light, contributes to this colorful display.
It’s important to note that this iridescence is not an indicator of spoilage. Instead, it is a natural occurrence that results from the meat’s structure and how it interacts with light. In fact, this phenomenon is often observed in various other types of sliced meats, such as roast beef and turkey.

The iridescent effect on meat surfaces is primarily due to the diffraction of light. When light hits the surface