Product code: Vintage Agate Quartz (?) 2024 Rock Floating Modernist Sterling Silver Brooch Pin Pat No 2066969
2024 Pretty brooch that I am guessing is Agate? Quartz? I just don't know! It is floating and in a modernist backing. Back is marked Sterling with the pat no 2066969 on it. I'm not sure who the maker was.
The rock has some tiny natural flaws in it but feels smooth all around an not chipped. It measures about 2 1/2" long. Back shows some light age and use wear. Please see photos for the best description!