Black pearl jewellery can be very expensive, with pearl prices in Norway ranging from £1,000 to £3,000.
In the last few years, Norwegian pearl jewellers have been trying to cut down on their costs, and have introduced a range of jewellery designs which can cost as little as £100.
The price of black pearl jewelling is a lot lower than the rest of Norway, so there is less demand for this type of jewelling.
It is also very rare in Norway, meaning you have to work harder to find it.
This article originally appeared on Football Italias and is reproduced with permission.