Abernethy pearl

The Abernethy Pearl, also known as the Little Willie Pearl, is a freshwater pearl named after William Abernethy, who discovered it in the River Tay in Scotland in 1967. It is also known as Bill's Pearl.
The Abernethy Pearl was produced by a mussel belonging to the species Margaritifera margaritifera. It is spherically shaped and coloured white with a slightly pink overtone.
The pearl was reportedly valued at £10,000 in 1967. It was displayed at A&G Cairncross jewellers in Perth before being sold at auction for £93,951 in 2024. It is now on display at the National Museum of Scotland.