Some pieces of jewelry have what we call aurora borealis (or just “aurora”) rhinestones. These are stones that have an iridescent sheen to them. They often make the jewelry sparkle and really stand out, and come in a variety of different colors. The most common is just the clear iridescence, but I’ve also seen blue and red ones quite often as well.
Here are some examples:
Have you ever come across something like this before? Did you know what they were called? Which color is your favorite? I really like the red ones.