Inherited this some years ago. Mother and grandmother always said my great grandfather won it in a bet while traveling. They usually referred to it as the "diamond lavalier"and there were several other vintage and antique diamond pieces in safety deposit, so I assume it's real but haven't ever had appraised. Was just wondering if anyone could tell the era or time period from the picture alone. Thanks in advance for any observations and I apologize for subpar picture quality. 

