I have a ring like that, although not nearly as valuable, that I bought upon my first real promotion a year after I started with this company I work for.... 26 years ago. It is a gold ring with a blue topaz that has been laser treated on the top so that it has a multicolored, iridescent sparkle when the light hits it. I wore it a lot for years, but have not now for years more, but I can't imagine letting it go on purpose.
Funny how we do such things.