I suspect that we will all be in agreement that Princess Diana was wearing her Collingwood pearl drop earrings, as seen in the first photo below.
But which pearl necklace was she wearing?
Diana at the Ghillies'Ball.
Could she have been wearing this pearl necklace?
Necklace A.
Necklace A
Another screen grab from the ball
Or was Princess Diana wearing
Necklace B?
Necklace B