Help me identify this Iridesse pearl?

[uberkelly]

Hello, a friend used to work at Tiffany & Co, and many years ago bought me this Iridesse necklace. The little circle says "925". Can anyone tell what kind of pearl this is? I would like to sell the necklace. Thanks for any help!

 

[Pearl Dreams]

Can you photograph it against a white background? I am not sure of the color from that photo. It looks somewhat lavender.
If it's lavender colored, it's freshwater.