Blue Pearl Necklace

This is a beautiful and very unusual necklace. It consists of what appear to be freshwater pearls that are dyed (I assume) a wonderful turquoise/blue. The necklace is adjustable and' at its longest' measures approximately 20 inches. There are three strands of pearls that attach to the fastener with silver beads. The tag refers to pearls but I have no idea if they are real or not.