Sterling Silver, Botswana Agate, Obsidian, Black Agate, Marble, One Use
clay vintage pipe part from the Thames River London, C1700.
The pipe parts in necklaces like these are surprisingly strong and not brittle even though some are around 3 hundred years old. They may have been preserved in the mud of the Thames. They certainly have been fired well. Any beads treated badly or dropped onto a cement floor is liable to break.