Can anyone help me identify blue diamond pieces?

[edw_kym]

I was told that many of my discussions were of old costume jewely.But recently I located additional pieces at a thrift in Southern California. Tell me you can figure real from fake.?

 

[lovedogs]

Those are not diamonds.

 

[Rfisher]

I was told that many of my discussions were of old costume jewely.But recently I located additional pieces at a thrift in Southern California. Tell me you can figure real from fake.?

That looks familiar like I’ve seen it before.

 

[edw_kym]

Those are not diamonds.

I was told the gems are 1.glass or 2.cubic zirconia

 

[lovedogs]

I was told the gems are 1.glass or 2.cubic zirconia

Yup, that's my guess too. I think glass or paste because I don't see double reaction of zircon. If you know they aren't diamonds, why did you title the thread as if they are diamonds? I'm confused.

 

[lovedogs]

That looks familiar like I’ve seen it before.

You have. Previous thread. Not sure what OP is trying to accomplish