Thanks everyone for looking and for commenting.
It was sure a big surprise to see the 21 K stamp on it. There are 83 diamonds that tested positive on diamond tester. Total they equal about 0.83 of a carat.
On way home after work, stopped by the mall and got a 6 pack of Stella Artois. You ask why Stella? Cause not only is it a good beer but they have yellow caps. A great way to celebrate a great find.
I will definitely be going back tonight to see if I can find the chain.
Thanks again.