What is the name of the gems/stones store on Michigan Ave. in Chicago, IL?

I was just there earlier today and I forgot the name of the place. It's very small and they sell gems such as amethyst, sapphire, ruby, etc. though usually have more common, less rare stones such as hematite and such. They sell necklaces made of such stones/gems and bracelets,earrings, etc. I am trying to remember the name though it doesn't come to mind.