| Brand | Unbranded |
| Color | Silver |
| Main Stone | Opal |
| Metal | Silver |
| Type | Brooch |
| Base Metal | Gold |
It could be way older (earlier than 1930's), or it could be newer (later than 1980's or 1990's). It is still sterling if it is marked so. We tested all our jewelries. • we are not experts on stones.