Necklace signed C.T.

I recently purchased this for about $10.00. I am not a fashion jewelry collector, so I have had to do my research! Unfortunately, I have no idea who the initials C.T. stand for. Its not carat, that I am 99.9% sure of. I have tried to capture good pictures for anyone out there who may be able to help? I do not even know the dating on this. Thanks to everyone again who helps us all to understand our little treasures!