Vintage Quartz Stone Coaster Set

This is such a cute coaster set that is perfect for a side or coffee table! This is possibly quartz or just some beautiful stone (like marble or something)! Either way they are beautiful! The backs have a layer of blue felt to keep them from scratching a surface! 6 coasters along with a holder!
Please keep in mind the item is vintage and may have wear.

Approximately 4” height (coasters in holder), 3 1/2” width