Scottish "pebble" jewelry - silver-based tourist jewels made with indigenous Scottish stones - was a popular trend in the Victorian era. Here's the Irish counterpart. This brooch is made from Connemara green marble, which is calcite marble with lots of serpentine, and it is found only in a small area between Streamstown and Lissoughter. It was a trade treasure used by the inhabitants in prehistoric times, and during the late 1800s it was mined again for jewelry. A "Y" hallmark tells us the jewel was made in 1894. The lady holding a beacon is the symbol for Dublin, and a harp is the Irish fineness mark for sterling silver.