There was an expensive theft from a disabled toilet in Morrison's Supermarket in Largs at around 3.30pm on Saturday.
A 66 year old woman visiting Largs had used the toilet and had accidentally left two rings in the cubicle, but upon returning a short time later, she found that they had gone.
One gold ring had six diamonds, while the other was an aquamarine ring, with a total value of around £900.
If you can help the police with more information, please contact the new non emergency telephone number of 101.