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.

 

[ennui]

Tiffany abandoned the Iridesse stores in 2009. Most of the articles I found are behind paywalls, so ...
There are a few items on eBay, if you want to watch there for a while. Maybe something similar will pop up?
If it is Iridesse, it should be hallmarked somewhere, maybe on the opposite side of the tag? I don't think it will be marked Tiffany.